Originally posted by Jens.
Some links in this article have expired and have been removed.
A small patch has been released for Penumbra: Requiem, you can get it here. The patch will improve performance in some levels as well as correcting various minor errors, for slightly more details see the support article.
Some reviews of Penumbra: Requiem has also appeared. You can continue on to hear what IGN.com, Cheatcc.com and Gamernode.com thinks about the game. For Swedes and Norwegians there is one review at Gameplayer.se and one at Gamer.no.
The Mac & Linux versions are almost finished, stay tuned for release details soon!