Well I have it on good authority that Microsoft is /NOT/ ditching Sync over WiFi, in fact they are enhancing it. The copy of AS 4.0 floating around is a development copy so people can start coding their applications to port through it. AS 4.0 will be released next week officially and complete.

This is from a friend in Redmond over in bulding C (their main tech building)

Quick hint on another cool thing... Think assisted streaming media via Wifi/Bluetooth ;-)

OOOOh! That does sound cool!