http://dovecot.org/releases/1.2/beta/dovecot-1.2.beta1.tar.gz
http://dovecot.org/releases/1.2/beta/dovecot-1.2.beta1.tar.gz.sig

Largest changes since v1.1 can be found from
http://dovecot.org/doc/NEWS-1.2

Changes since alpha5:

 - Added support for ESORT extension (also SORT .. RETURN (PARTIAL) from
CONTEXT=SORT that allows windowing SORT results)
 - pop3: If client idles for 10 seconds, commit transaction (allowing
mbox to become unlocked).
 - crashfixes to virtual mailboxes
 - all kinds of bug fixes, error message improvements, etc.
 - http://dovecot.org/patches/1.2/stats-plugin.c may give some
interesting statistics about commands

There isn't really much left to do for v1.2.0 except some small fixing
to shared mailbox code. And writing documentation for it..