 A second Portal patch released on March 3 altered the game 's ending sequence to show Chell being pulled back into the Aperture facility . Gaming journalists speculated that an announcement of Portal 2 was imminent . On March 5 , Game Informer announced Portal 2 's official release on the cover of its April issue . During the following week , Gabe Newell 's speech accepting the Pioneer Award at the Game Developers Conference 2010 ended with a fake blue screen of death appearing on a screen behind him with a message purported to be from GLaDOS which hinted of further Portal 2 news at the upcoming E3 2010 . Two weeks before the E3 , game journalists received a cryptic e @-@ mail , worded as a press release from Aperture Science , hinting that the presentation on Portal 2 would be replaced with " a surprise " jointly hosted by Aperture Science and Valve . This prompted speculation that the surprise would be the announcement of Half @-@ Life 2 : Episode Three , but Valve confirmed that it would be about Portal 2 . The surprise was the announcement of Portal 2 on PlayStation 3 . 
