WizKids will release Marvel HeroClix Wolverine and the X-Men next summer, incorporating WizKids’ new SwitchClix mechanic (see "WizKids Introduces SwitchClix"), and Team Bases (see "'Teen Titans HeroClix'").  Several Team Bases are planned, including (but not limited to) X-Men Gold and Blue strike forces, the Alan Davis-era Excalibur, and the Brotherhood of Mutants. 
The set will be 60+ figures.  Thematic chase figures and prime figures are planned.
The timing will be good for tying into the release of The Wolverine on July 23, 2013 (see "First 'Wolverine' Poster").