The release version of 1.10 has a number of skill changes that didn't show
up in the beta, and some are really big. I compared the MPQ files for both
versions, and compiled this list of differences.

Here's the big changes:

Amazon:

Jab and Stafe are now uninterruptable.
Impale does much more damage at high levels. L20 adds 775% damage, was 490%
damage.
Strafe now has a minimum number of arrows fired. Not sure what this means.

Sorceress:

Cold Mastery is much more effective now, it starts at 20% and gains 5% per
level (was 5% + 3% per level).

Necromancer:

All of the Golems picked up some resists, including 100% fire for the Fire
Golem, and 25% physical for the Clay Golem.

Paladin:

Zeal is now uninterruptable.
Blessed Aim now passively gives a 5% attack bonus per level.
Resist Fire / Cold / Lightning now add 1% per level to maximum resists when
active, and passively add 0.5% per level to maximum resists.
Resist Fire / Cold / Lightning only give damage synergy to Vengeance for
their appropriate element.

Druid:

Summoned wolves and grizzlies now gain 5% resist all per level, capping at
85%.
The Hit Point synergy from dire wolves is better, 25% per level instead of
20%.
Grizzlies get about 50% more base hit points.
The damage synergy from grizzlies is better, 10% per level instead of 5%.
Rabies gains more damage from synergies now, 18% instead of 12%.
Rabies now lasts longer with more skill points invested.
Armageddeon gains more damage from synergies now, 14% instead of 7%.
Armageddeon gains more time from synergies now, 2 seconds instead of 1.
Hurricane gains more time from synergies now, 2 seconds instead of 1.
Spirit of Barbs is stronger now, returns 20% damage per level instead of
10%.
All spirits have more HP, they gain 25% life per level, instead of 20%.

Assassin:
Mind Blast stuns for longer with more skill points invested.
Blade Shield now deals a much larger percentage of the damage of wielded
weapons.
Phoenix strike now gives an attack bonus per charge level.

Here's a detailed list of all changes:

AMAZON SKILLS

Jab
No longer interruptable

Impale
Damage% per level went from 10->25

Lightning Bolt
Now deals 75% weapon damage (was 100%) (Or at least it was in the MPQ, it
might have been hardcoded before).

Ice Arrow
Damage increased very slightly at highest levels
Average Damage:
Slvl  1: was (   8), now(   8), 1 max synergy(  21)
Slvl 10: was (  75), now(  75), 1 max synergy( 195)
Slvl 20: was ( 224), now( 224), 1 max synergy( 582)
Slvl 30: was ( 457), now( 457), 1 max synergy(1188)
Slvl 40: was ( 802), now( 806), 1 max synergy(2096)

Strafe
Now has a formula for minimum # of missiles = 2 + skill level / 4
Now deals 75% weapon damage (was 100%) (Or at least it was in the MPQ, it
might have been hardcoded before).
Range increased from 20 yards to 23 yards

Immolation Arrow
Average damage per level increased by 2 points for skill levels above 24
Average damage per level increased by 4 points for skill levels above 32
Average Damage:
Slvl  1: was (  15), now(  15), 1 max synergy(  45)
Slvl 10: was ( 125), now( 125), 1 max synergy( 375)
Slvl 20: was ( 365), now( 365), 1 max synergy(1095)
Slvl 30: was ( 665), now( 677), 1 max synergy(2031)
Slvl 40: was ( 965), now(1013), 1 max synergy(3039)

Freezing Arrow
Average damage per level increased by 2 points for skill levels above 24
Average damage per level increased by 4 points for skill levels above 32
Average Damage:
Slvl  1: was (  45), now(  45), 1 max synergy( 153)
Slvl 10: was ( 145), now( 145), 1 max synergy( 493)
Slvl 20: was ( 315), now( 315), 1 max synergy(1071)
Slvl 30: was ( 515), now( 527), 1 max synergy(1792)
Slvl 40: was ( 715), now( 763), 1 max synergy(2594)

Charged Bolt
Average damage per level increased by 0.50 points for skill levels above 24
Average damage per level increased by 0.75 points for skill levels above 32
Average Damage:
Slvl  1: was (   3), now(   3), 1 max synergy(   7)
Slvl 10: was (   8), now(   8), 1 max synergy(  17)
Slvl 20: was (  15), now(  15), 1 max synergy(  32)
Slvl 30: was (  25), now(  28), 1 max synergy(  61)
Slvl 40: was (  37), now(  47), 1 max synergy( 102)

Inferno
Mana per level reduced by a factor of 4
Damage synergy went from 12% -> 13%
Average damage per second per level increased by 0.78 points for skill
levels above 24
Average damage per second per level increased by 1.56 points for skill
levels above 32
Average Damage per second:
Slvl  1: was (  19), now(  19), 1 max synergy(  68)
Slvl 10: was ( 105), now( 105), 1 max synergy( 378)
Slvl 20: was ( 212), now( 212), 1 max synergy( 762)
Slvl 30: was ( 328), now( 332), 1 max synergy(1197)
Slvl 40: was ( 453), now( 472), 1 max synergy(1699)

Static Field
Minimum damage went from 1 -> 0

Blaze
Average damage per second per level increased by 1.56 points for skill
levels above 24
Average damage per second per level increased by 4.69 points for skill
levels above 32
Average Damage per second:
Slvl  1: was (   9), now(   9)
Slvl 10: was (  41), now(  41)
Slvl 20: was (  94), now(  94)
Slvl 30: was ( 166), now( 175)
Slvl 40: was ( 256), now( 306)

Cold Mastery
Base lower resist went from 5% -> 20%
Lower resist per level went from 3% -> 5%

NECROMANCER:

Clay Golem
Now has Resist Physical of 25%
Now has Resist Lightning of 20%
Now has Resist Cold of 50%
Armor class went from 20->100

Blood Golem
Now has Resist Magic of 20%
Now has Resist Poison of 20% (was 50%)
Armor class went from 80->120

Iron Golem
Now has Resist Lightning of 50%
Now has Resist Poison of 100%
Armor class went from 120->140

Iron Maiden
Damage dealt to players and hireables went from 10% -> 25%

Poison Nova
Average damage per second per level decreased by 4.68 points for skill
levels above 32
Average Damage per second:
Slvl  1: was (  30), now(  30), 1 max synergy(  91)
Slvl 10: was (  90), now(  90), 1 max synergy( 270)
Slvl 20: was ( 187), now( 187), 1 max synergy( 560)
Slvl 30: was ( 349), now( 349), 1 max synergy(1048)
Slvl 40: was ( 599), now( 562), 1 max synergy(1685)

Fire Golem
Now has Resist Fire of 100%
Armor class went from 160->200

PALADIN:

Resist Fire
Increases maximum fire resistance by base skill level
Passively increases maximum fire resistance by half base skill level

Resist Cold
Increases maximum cold resistance by base skill level
Passively increases maximum cold resistance by half base skill level

Zeal
No longer interruptable

Charge
Has new parameter, Trails, which is set to 2. I don't know what this means.

Blessed Aim
Passively increases attack% by 5% per base skill level.

Resist Lightning
Increases maximum lightning resistance by base skill level
Passively increases maximum lightning resistance by half base skill level

Vengeance
Resist Fire / Cold / Lightning now give 10% extra synergy damage only for
their respective elements, instead of 6% for all.

Blessed Hammer
Damage synergy decreased slightly, went from 15% -> 14%
Average damage per level decreased by 1 points for skill levels above 24
Average damage per level decreased by 2 points for skill levels above 32
Average Damage:
Slvl  1: was (  14), now(  14), 1 max synergy(  53)
Slvl 10: was (  90), now(  90), 1 max synergy( 342)
Slvl 20: was ( 198), now( 198), 1 max synergy( 752)
Slvl 30: was ( 330), now( 324), 1 max synergy(1231)
Slvl 40: was ( 486), now( 462), 1 max synergy(1756)

BARBARIAN:

Double Swing
Mana cost reduced by a factor of 2

Frenzy
Mana cost reduced by a factor of 2

DRUID:

Poison Creeper
Now castable in town
Hit points per level went from 20% -> 25%
Base Hit Points went from (26-36)->(42-58)
Average damage per second per level increased by 0.20 points for skill
levels above 24
Average damage per second per level increased by 0.40 points for skill
levels above 32
Average Damage per second:
Slvl  1: was (   1), now(   1)
Slvl 10: was (   8), now(   8)
Slvl 20: was (  21), now(  21)
Slvl 30: was (  36), now(  37)
Slvl 40: was (  51), now(  55)

Firestorm
Damage synergy went from 20% -> 23%
Average damage per level per second increased by 0.20 points for skill
levels above 24
Average damage per level per second increased by 0.60 points for skill
levels above 32
Average Damage per second:
Slvl  1: was (   2), now(   2), 1 max synergy(  10)
Slvl 10: was (  14), now(  14), 1 max synergy(  80)
Slvl 20: was (  39), now(  39), 1 max synergy( 218)
Slvl 30: was (  83), now(  85), 1 max synergy( 474)
Slvl 40: was ( 155), now( 165), 1 max synergy( 922)

Summon Spirit Wolf
Now gain 5% resist all per level, caps at 85%
Average damage per level increased by 2 points for skill levels above 32

Arctic Blast
Mana per level reduced by a factor of 4
Average damage per level per second increased by 0.78 points for skill
levels above 24
Average damage per level per second increased by 2.14 points for skill
levels above 32
Average Damage per second:
Slvl  1: was (  12), now(  12), 1 max synergy(  48)
Slvl 10: was (  70), now(  70), 1 max synergy( 280)
Slvl 20: was ( 146), now( 146), 1 max synergy( 582)
Slvl 30: was ( 230), now( 235), 1 max synergy( 940)
Slvl 40: was ( 324), now( 348), 1 max synergy(1391)

Oak Sage
Now castable in town
Hit points per level went from 20% -> 25%

Eruption
Average damage per level increased by 1 point for skill levels above 32
Average Damage:
Slvl  1: was (  20), now(  20), 1 max synergy(  68)
Slvl 10: was (  86), now(  86), 1 max synergy( 292)
Slvl 20: was ( 222), now( 222), 1 max synergy( 755)
Slvl 30: was ( 397), now( 397), 1 max synergy(1350)
Slvl 40: was ( 606), now( 614), 1 max synergy(2088)

Heart of Wolverine
Hit points per level went from 20% -> 25%

Summon Dire Wolf
Now gain 5% resist all per level, caps at 85%
Average damage per level increased by 1.5 points for skill levels above 32
Average damage per level increased by 4   points for skill levels above 32
Hit points per level went from 20% -> 25% (as did the synergy boost to
Spirit Wolves / Grizzlies)

Rabies
Synergy went from 12% -> 18%
Average damage per level per second increased by 1.56 points for skill
levels above 24
Average damage per level per second increased by 3.90 points for skill
levels above 32
Duration now increases by 10 frames (0.4 seconds) per skill level
Average Damage per second:
Slvl  1: was (   8), now(   8), 1 max synergy(  36)
Slvl 10: was (  38), now(  38), 1 max synergy( 173)
Slvl 20: was (  83), now(  83), 1 max synergy( 381)
Slvl 30: was ( 147), now( 156), 1 max synergy( 791)
Slvl 40: was ( 230), now( 273), 1 max synergy(1258)

Fire Claws
Synergy went from 20% -> 22%
Average damage per level increased by 3 points for skill levels above 32
Average Damage:
Slvl  1: was (  18), now(  18), 1 max synergy(  95)
Slvl 10: was (  98), now(  98), 1 max synergy( 527)
Slvl 20: was ( 254), now( 254), 1 max synergy(1369)
Slvl 30: was ( 488), now( 488), 1 max synergy(2633)
Slvl 40: was ( 770), now( 794), 1 max synergy(4285)

Solar Creeper
Now castable in town

Volcano
Average damage per level increased by 1.5 points for skill levels above 32
Average Damage:
Slvl  1: was (  18), now(  18), 1 max synergy(  40)
Slvl 10: was (  62), now(  62), 1 max synergy( 136)
Slvl 20: was ( 158), now( 158), 1 max synergy( 348)
Slvl 30: was ( 302), now( 302), 1 max synergy( 664)
Slvl 40: was ( 494), now( 510), 1 max synergy(1141)

Spirit of Barbs
Hit points per level went from 20% -> 25%
Thorns damage per level went from 10% -> 20%

Summon Grizzly
Now gain 5% resist all per level, caps at 85%
Damage% per level went from 5% -> 10% (as did synergy boost)
Base Hit Points went from (342-513) -> (550-750)
Armor class went from 196->245
Average damage per level increased by  6 points for skill levels above 24
Average damage per level increased by 10 points for skill levels above 32

Armageddon
Duration synergy went from 1 second -> 2 seconds
Damage synergy went from 7% -> 14%
Average damage per level increased by 1    point for skill levels above 24
Average damage per level increased by 2.5 points for skill levels above 32
Average Damage:
Slvl  1: was (  60), now(  60), 1 max synergy( 200)
Slvl 10: was ( 252), now( 252), 1 max synergy( 813)
Slvl 20: was ( 555), now( 555), 1 max synergy(1760)
Slvl 30: was ( 948), now( 954), 1 max synergy(2996)
Slvl 40: was (1429), now(1457), 1 max synergy(4555)

Hurricane
Duration synergy went from 1 second -> 2 seconds
Damage synergy went from 7% -> 9%
Average Damage:
Slvl  1: was (  38), now(  38), 1 max synergy( 105)
Slvl 10: was ( 107), now( 107), 1 max synergy( 298)
Slvl 20: was ( 215), now( 215), 1 max synergy( 601)
Slvl 30: was ( 347), now( 347), 1 max synergy( 970)
Slvl 40: was ( 503), now( 503), 1 max synergy(1407)

ASSASSIN:

Mind Blast
Gives stun length of 2 seconds + 0.2 seconds per level

Blade Shield
Now deals 12.5% weapon damage (was 2.5%) (possibly per-frame)

Phoenix Strike
Now gives 25% attack bonus per charge