My understanding of the 2011 model is the availability of the 5.0L Coyote V8 for Mustang. 385-400hp, depending on who you ask within Ford.
The 6.2L V8 will be available for Job 2 of the 2010 SVT F-150 Raptor. Job 1 will feature the carryover 5.4L Triton V8. Whether the 6.2L V8 ever ends up in a Mustang is pure speculation at this point.