RhinoFish - 1:43 pm on Aug 31, 2010 (gmt 0)

on 8/17/2010, they said...

Testing of paid search account transitions has begun
[ysmblog.com...]

this blog entry of theirs doesn't give a specific date, and also mentions that if they hit a slowdown, they could decide then to delay it to after q4.

so, nobody knows yet - but it's coming.