New Features / Game Balance Changes:

Modding possible for monsters, nations and scales.
New theme for Marignon, Conquerors of the Sea.
New theme for Ulm, Black Forest.
Master password.
Two new gods, Divine Glyph and Carrion Dragon.
(Mis)fortune affects event frequency with 5% per step.
Order/Turmoil affects event frequency with 5% per step.
New Divine Titles.
New magic sites.
Pressing 'I' on unit info shows monster/weapon/armor numbers.
Fires of the Faith is more powerful against enemy dominions.
Num Pad can be used to enter numbers too.
Symbol for recuperation.
Map screen speedup.
Three new independent sea provinces.
Bonus resources for the difficult AIs now depends on the game richness setting.
Master Alchemist -> 50 DP
Black Bone -> pirate captain
Improved cheat detection
Pangaea has different start units.
New environment variables for maps and mods directories (DOM2_MAPS & DOM2_MODS).
Can now hold 5 times as many maps.
Added one more resolution setting.
New Sauromancer for desert tombs nature-> fire
Warning before deleting server game.
Fatal error messages are sent to stderr.
Queen of the Lake can no longer summon allies.

Bug Fixes:

Bug left the highest resolutions permanently greyed out.
Crystal Heart never expired.
It was possible to appoint the god as prophet.
Some afflictions couldn't heal when recalling god.
Fires from Afar affected too many targets.
-p works properly now.
Send Horror works properly now.
Fire susceptibility wasn't displayed correctly.
Fixed temp file error with long (>500) temp dir path.
One Comander of Ulm, strat move 1 -> 2.
Error message if old Dominions I file is present in maps folder.
When casting wish you didn't see what you typed.
Niefelheim could recruit Gygjas in underwater forts.
Fixed minor network memory leak.
Serpent King snake form was sacred.
Knight of avalon, hoof -> alicorn.
Arch Censor doesn't eat any longer.
Twin spear has serpent kryss stats, fixed.
No more random hill forts in the sea.
No longer possible to drown mercs by recruiting then in underwater provinces.
Incorrect stealth value was displayed sometimes.
Couldn't be immune to bog beast poison.
Arcane Domination is now an alteration spell.
Carrion Reanimation didn't work correctly.
Raven Feast didn't bring any death gems.
Some humanbreds had wrong equipment and movement rate.
It was possible to bid a negative amount of money on mercs, fixed.
Revenant no longer eats.
Sharks had too many item slots.
Dancing Trident resulted in attack skill reduction.
Naga had wrong path cost.
Fixed an error when changing victory condition.
Fixed potential memory screw up.
Some popups were wrong when under siege.
Routed unit has -4 def after combat, fixed.
Black Sorcerer doesn't change back if hit by global, fixed.
New Era Pan had wrong weapon.
Many typos corrected.