Sorry this took even longer than I thought but they should be arriving in unstable this afternoon.
I also have a backport for stable available at http://www.braincells.com/backports This directory is not aptable so manually install the packages for now. (Hopefully backports.org will have their sarge repository open soon. When that happens they will move there.)
The configuration file format has changed so you will want to carefully check /etc/dovecot/dovecot.conf when upgrading. I forgot to put a note about that in NEWS.debian sorry.
I think I might have forgotten a couple of config file tweaks people have suggested and in general, if you sent me mail in the past month or so and I didn't respond or the problem still isn't fixed, please give me a nudge. This is why you really ought to use the Debian bug tracking system rather than mailing the maintainer.
Anyway, enjoy.
-- Jaldhar H. Vyas jaldhar@debian.org La Salle Debain - http://www.braincells.com/debian/