Sigh, I wish being specific was something we could do, with our current resourcing we can only hope for the best ;) releasing a new API is never anything simple ;) All I can say is that so far this month at June 6th, we're still on track for JUNE sometime :P
Remember all the 1.0 queries will still work in *exactly* the same way, you will just need to modify the authorization.
Cheers
Dups