Public build updated to 0.75As compared with the previous version there is a new girl Alina. Also added new story days to other girls, Masha and Oksana. There are other new locations, and hidden secrets.
Saves in the fifth chapter become fully operational and now you can load your game from any girl with whom you spent the last night.
Also, I had changed the location of the files in the game, so be sure to do a clean installation, after removing the last version of the game. Your saves will preserved.
Game become much more stable now.
More info and links for download on game's site.