There's only matching LINQ so far.
WinFx: I guess inside a month, if I were a gambler I'd say 2 weeks. If it's going to be lined up with next Vista CTP then 2-3 weeks.
I strongly believe they have WinFX already working with the RTM build, they are using the little time remaining to next CTP to do some testing most likely. The 2.0 RTM is very close to identical with the RC that has been around for 2-3 months so they've had plenty of time to make it work with RTM.
edit: Just to confirm my guess above, LH blogs writes "Current internal Windows Vista/WinFX builds work with these final builds. Once we get this build to a previewable state, we'll ship it out as a CTP. We realize it is in high demand."