[asterisk-users] track 1.6 progress

[Sigma Networks]

I have an upcoming need for SIP over TCP which is part of the 1.6 
feature set.
What is the best way to find out a rough idea as to when 1.6 will go out 
of beta into production?
Is there a user group (svn perhaps) for tracking 1.6 stability and progress?

thank you, jim