The Press Conference Is A Lie

Looks like the press conference Valve was going to hold for Portal 2 at E3 has been cancelled and will be replaced with... Well, i can't tell you. Not because i don't want to but because i don't know. The below picture came up on Twitter today and has left people asking questions... (click to see the picture full size)

What is the surprise? Half-Life 2: Episode 3? Left 4 Dead 3? Personally, i think everyone who goes will get free cake.