I just started spreading the "ibProArcade RC1" a few minutes ago to some Testers, but in the first step only to german Testers at
www.vbhacks-germany.com
The reason is that I need to do the english install-instructions and the left menu in the AdminCP for the ibProArcade is still german while everything else is "multi-language" (you can choose in the Arcade-Settings which languagefile should be used, english or german).
Wait some more, right after finishing all language-things I will also provide a testversion to some english Testers here at vbulletin.org !
I think after getting first reactions about the RC1 I could have a slight vision of the release-date, but be sure it's not that far away