EA Partners and Valve announce a retail distribution agreement for Portal 2, the upcoming first-person puzzler sequel. The announcement places the game's current release date as April 21, 2011, which is in keeping with the recent announcement to expect the game the week of April 18th. "Portal 2 is Valve's most innovative title in the company's history and will be launched with a first-class launch campaign this April," said Doug Lombardi, vice president of marketing at Valve. "We're excited to be working with Electronic Arts to deliver this title as we expand our platform strategy to include the Mac and PlayStation 3 platforms."