Would Penumbra: Requiem be also a Boxed version?

[WindexGlow]

The expansion will most likely be standalone, to encourage people buying the game. Since the game is an expansion (and not an episode) it will definitely be shorter and thus not worth a distributer time to box it up and ship it, especially with high gas prices lately.

The expansion pack is probably to pump some funds into the Frictional Games war machine, as they've stated before they would rather not do another episodic game. Because of this, their games will likely be longer, and require more money to make.