G4tv reports that Wizards has announced the plans for "Duels of the Planeswalkers 2012" - details are still rather vague, but they do reveal Archenemy mode which will allow three human players to team up against an Archenemy AI (there are no plans to allow the inverse currently.) The release date is currently June 30, 2011.

Read the announcement over on G4TV.com and the related interview with Magic brand manager Paul Levy.

Image taken from G4tv.com