Any planned / probable release date for tcl/tk 9.1?

Hello all,

I've seen in the source code that tcl/tk has entered the alpha stage for
release 9.1. I've looked for a planned or just probable release date for
the final v9.1, but I couldn't find anything. I can see that there is
still work being done on the code, so I guess it will still take some
time, but I wanted to know if there was anything planned, or at least a
general idea of how long it will take before the actual release. We have
applications that we'd like to port to tcl/tk 9, but version 9.0.1 had
quite a few bugs that prevented us from using it. The bugs have been
corrected - many thanks to everybody involved for that! -, but we'd prefer
basing our code on an "official" version, and not a development one.

Any pointers would be greatly appreciated. Thanks!
--
 Eric