I just remembered about this and can't find any recent info besides Yegge calling it "a transitional thing"[1] in '08. It made a big splash after he announcement at FooCamp '07. Is it actually in use within Google? Has it or will it ever be released? Anyone know anything?

[1] http://steve-yegge.blogspot.com/2008/06/rhinos-and-tigers.html