Have a look here:
http://translate.googleusercontent.c...4l5otBw#790131
Here are the download links:
PocketBook Pro 912
PocketBook Pro 903
PocketBook Pro 902
PocketBook Pro 612
PocketBook Pro 603
PocketBook Pro 602
EDIT: bear in mind this all looks experimental, and if I understand correctly from googletranslate, they are going to realease a new version every friday at 6pmn (their time) presumably until they get the stable, final one.