It was also confirmed that GLaDOS was indeed still alive, and would return as the main antagonist. Portal 2 was previewed in the twelve-page cover story of the April 2010 issue of Game Informer, revealing some plot details and new gameplay features.
First hinted in the update made to Portal in March 2010 as part of the Portal ARG, it was announced on Mato be released in fall 2010, but was later announced on June 9, 2010, as delayed until an unspecified date in 2011, until it was said to be released on February 9, 2011.
