They probably are but I can't see any developers taking them seriously on this...just look at the ODF fud that microsoft are trying to throw around...They are probably trying to destroy ODF by using XAML as a tool to do it...
Microsoft 0 Sane professionals 10
(Look how their passport idea went down!!) I think that ms are finally starting to feel the pain of not really being listened to anymore!? Google are the new IT giants not Microsoft...they are becoming a failing business model!