KL.... there are probably 3 forums that this post would be appropriate for, and this isn't one of them.
If you do some wm9 searches in the HTPC forum (I know some of the members are reluctant to wander over there where all we real freaks hang out!) and the DVD Software forum you'll come up with a more condensed and relevant list of results. I know in the HTPC Forum there is a very, very long "review" thread of the T2 DVD where a wide variety of issues are discussed in detail as it pertains to WM9. As for future releases, Microsoft says they're working on a bunch of them and refuses to say anything more about it.