Hello,  Officially no, it is not supported.   With my testing so far, it has worked fine but that's not going to cover a very broad range of websites (Unless all your Users are only interested in motorbikes, mountain bikes and VDI)   I believe our QA team are planning to investigate flash12 this month so we should know more after that.   Although not supported, if you've find a particular issue with flash12 it is worth reporting it via a case as I'm sure that would help save time getting the issue fixed.  Thanks, Andrew.
Hi,  Does vWorkspace 8 MR1 support redirection of Flash player 12?  Scott.
vWorkspace Flash 12 support