Nothing new, of course. What's new is that this already happens with Windows 7, which is still in the public beta stage. Yes, MS provides updates for a beta version...security updates, naturally, and quite a few of them. The latest ones, however, break Windows 7 when run in a virtual machine: windows can't be moved anymore, and their close button is inactive.
Memo to myself: I don't need a fun category. 😄