Yep, the Release Candidate 1 of SP3 is ready and can be downloaded via Microsoft Connect. I’m installing it right now.
Those who don’t have Connect can download it via Microsoft Update. You just need to save this file as *.bat and open it:
[removed on request - if you need it go to connect.microsoft.com]
or ask me at: fifi5000[a---t]gmail[dooot]com
And now just check for updates in Microsoft Update 
Oh, i recommend you uninstalling previous beta of SP3 first.
UPDATE:
Just installed 
