As any of my readers will probably know, WinFS is a hot/sore spot for me. To my surprise, Tom Rizzo dropped a Beta of WinFS (and it supposedly is backwards compatible with XP) on MSDN a day or two ago.
Interestingly is that WinFS will not be included in Vista, but be released post-Vista. It does seem that the 2010 date may be wrong (good!). If I get a chance to dig into it i’ll post what I find here.