Although I've not seen an official announcement yet, Amnesia: The Dark Descent is ready to download - at least for pre-orders.
So if you pre-ordered, go get it .
This also leads one to think that new purchases will also be taken straight to the download area as well. $20 is so cheap for the high quality gaming experience that comes from Frictional Games. Compare with the commercial games of Doom 3 and Quake 4 which cost $49.99.