Oh, and like Calleiah said, our dealership did not yet have any 2012 Odysseys but also confirmed that there were no changes for 2012 that they were aware of.
I was told there were no major design changes and the only minor changes had to do with trim level features-
http://carseatblog.com/12217/2011-honda-odyssey-long-term-wrap-part-i/