The first wave of invitations to the developer preview program went out late last night. I’ve been working like a madman since returning from SXSW to get some of the mundane but necessary infrastructure in place to enable us to support Kaylee and help third party developers transition to the new code. We’ll be doing this in waves, very small at first, and as Kaylee matures and more developers become experienced with it, we’ll add larger numbers of people to the program at a time.