As far as I know so far, it just advances the release date of the PC version of Portal 2.
On a related note, this marketing thing with the Potato (POrTAl TwO) is far larger than I last expected. They've even gone as far as encrypting messages within hidden sound files within the games.
For all the info for this pre-release event that I've been looking at lately; Look Here.
On another note, the number of Potatoes from the users in our steam group are pretty disappointing.
Bookmarks