According to this thread there will be CTP5 and CTP6 and RTM and they plan to deliver before end of this year.
Yes, and that's still the plan :). We're hoping nothing will cause that to change as we are really excited to want to get this product out to you folks. You should see CTP5 in the next few weeks.
Just wondering when the product will go RTM (or has it already gone - I don't see it in my MSDN downloads area) I thought it was at the end of November
I found a date of Dec. 7th or 8th here:
That site is linked from the official product info page.
A bit more info can be found here:
Again, linked from the official product info site, under Blogs: