The Spring 2011 Big Muscamoot will be available on Thursday, May 19th 2011 at Rotofugi.com. They will be announcing when via their Twitter feed (I'm guessing it will be the day of). Or you can hit up their Chicago store when it opens at 11AM.
This Muscamoot features pink vinyl with purple, orange, yellow and green paint hues. The figure is designed by Chris Ryniak with paint by Joe Somers and Kirby Kerr.