Well, Gordon... I suppose you don't check this site all that often and that's why no reply yet, but that's understandable. I called into GXI and talked to a very nice guy in technical support. I was mainly asking about the improvments in the 2012 Z-Beast as I'm wanting to order one to give it a try.
I'll go ahead and order one through HD and hope for the best. I'm optimistic that I'll get a good mower and that you have addressed all of the issues that past customers have had last year.
I'll follow it up with an unbiased review here on this site.