Release timelines and Unicode2 branch

[Adrian Robert]

Hi,

I'm maintaining the Emacs-on-Aqua GNUstep / OS X port, currently  
based on emacs 20.7 (http://emacs-on-aqua.sf.net/).  I want to update  
this to a more recent version but would ideally like to do so against  
a stabilized / released version of GNU emacs -- just so I know that  
bugs are my own fault when doing the port.  On the other hand, I'm  
not sure if the 21.3/21.4 release is best for this since there was a  
lot of change since then.  That brings my first question:

1) When is the best estimate of when 22.1 will come out?

My second question concerns the unicode-2 branch of CVS.  As I  
understand it, this branch contains reworked internal handling of  
character encoding, is receiving updates from CVS Head, and will  
eventually form the basis for a future emacs release.  (23?)  To  
avoid having to rework Emacs-on-Aqua's character handling in the  
future, I was thinking to base my port on this branch rather than  
22.1.  So my questions here:

2) Is 22.1 being released off its own branch (instead of the head),  
and if so are the stabilizations (to be) done there merged into  
unicode-2?

3) How much significant unicode-2-specific work remains before that  
branch becomes eligible for a release of its own?  (I see from the  
list archives there are plans to merge unicode into CVS head, but  
that doesn't necessarily mean there won't be further heavy  
development before 23.1.)  And how stable / bug-free is unicode-2  
right now compared with the will-become-22.1 code?  What I'm getting  
at is, is it reasonable to port Emacs-on-Aqua to this branch now, or  
should I stick with the to-be-22.1 code, or perhaps just wait before  
starting anything?

thanks,
Adrian