http://www.paradoxplaza.com/index.php?op...Itemid=129
New York, USA (June 16, 2008) – Paradox Interactive today announced the official release date for Penumbra: Requiem, expansion to the critically acclaimed horror release Penumbra: Black Plague.
Penumbra: Requiem is scheduled for release on August 27, 2008. The game will be available exclusively via digital download at GamersGate. The expansion has been developed by Frictional Games and published by Paradox Interactive.