GemRB V0.6.4 (2011-03-27):
New features:
- PST maze and (un)hardcoded projectiles
- full wild, dead, miscast and vocal magic support
- subspell selection (spell immunity, nahal´s reckless dweomer...)
- Autodetect GameType if it is set to ´auto´ or commented out
- compatibility with the bg2 demo
- VVC lightspot support

Improved features:
- travel regions, projectiles, dialog startup
- bink player has no/less artifacts, good sound quality
- combat, effects, actions, triggers, banters
- bugfixes

Applied patches:
a set of patches for Android support from Beholder
arm compilation fixes by ShadowJack
patch from Thomas Klausner fixing building with libpng 1.5
patch by Hana Dusíková to support static linking on mac

GemRB V0.6.3 git (2010-11-21)
New features:
- IWD:HoW is now completable!
- casting sounds and footsteps
- autodetection of secret doors, detect illusions
- basic bardsong support and selective magic resistance (bg2-style)
- proper store economics, ergonomics and dragging
- custom blood color (creature-dependant)
- new actions, iwd effects and triggers
- Importing a SoA game into ToB

Improved features:
- actor selection and action bar (for summons and illusions too!)
- door bashing and traps
- loading screens, ambushes, worldmap
- sparkles, panic and other effects
- actions, dialogs, object matching
- personal items support (swap/equip/remove)
- bugfixes

Applied patches:
iwd regression fix from Eggert Jón Magnússon

GemRB is quite complete, especially regarding bg2, bg1 and iwd (but not the extensions) which can be roughly played through. There is of course still stuff to be done.

PST and IWD2 are not completable and require a lot more love.