From Benjamin over at Eurogamer.de:
Atari told us yesterday that the PS3 version of Alone in the Dark is coming out in autumn. Eden Studios wants to adapt it instead of just doing a simple port. Additional content (episodes) might be possible for the PS3 version.
Demo is coming close to release. If possible they are going to release it prior to the game.
The news is taken from this preview, which includes some new screens. If you can't speak German, learn it. Stop being so lazy.