The page is live to request an invite to Google Music
music.google.com
music.google.com
As far as the service goes what use is syncing my mp3s when I've given up mp3s entirely for streaming subscription services like rdio? I think the market for this product was when my.mp3.com launched - 2000.
I'll stick to subsonic.org
If hope this is good enough that I can re-retire my ipod. I brought it back out after I discovered listening to music on my android was too much of a bother.