Hope I didn't forget anything :)

v0.99.8 2003-02-25 Timo Sirainen <tss@iki.fi>

* NOTE: Configuration file has changed a bit: auth_userinfo was
  replaced by userdb and passdb. *_port were merged into *_listen.
  Disabling listening in imaps port is now done by changing protocols
  setting.

* Maildir: .customflags location has changed for INBOX. If you have
  set any custom flags, move Maildir/.INBOX/.customflags into
  Maildir/.customflags or they will be lost.

* mbox: Autodetect /var/mail/%u and /var/spool/mail/%u as INBOXes
  if they're found and mail_default_env isn't set.

* passwd-file: File format changed a bit. If you used realm or mail
  fields, you'll have to fix the file. See doc/auth.txt for description
  of the format.

+ Fully featured POP3 server included. Disabled by default.
+ Support for LITERAL+, MULTIAPPEND, UNSELECT, IDLE, CHILDREN and
  LISTEXT extensions.
+ LDAP authentication support.
+ Internal API cleanups made Dovecot faster and take less memory
+ auth_verbose logs now all authentication failures
+ Support for Solaris 9 sendfilev()
+ New setting: mail_full_filesystem_access allows clients to access the
  whole filesystem by simply giving the path before the mailbox name
  (eg. SELECT ~user/mail/box, LIST "" /tmp/%). While this allows users
  to share mailboxes, it's not recommended since Dovecot's index files
  can't be safely shared.
+ New setting: client_workarounds.
+ Dynamically loadable authentication modules. Binary package builders
  should consider using it for at least LDAP.
+ mbox: Content-Length is saved now to each saved message, so it's
  now safe to have lines beginning with "From ".
+ mbox: mail_read_mmaped = no works with it now
+ Indexes can be kept in memory by adding :INDEX=MEMORY to MAIL
  environment. There's not much point to do this now though, since the
  UIDs won't be saved.
- COPY now behaves as RFC2060 says: "If the COPY command is
  unsuccessful for any reason, server implementations MUST restore the
  destination mailbox to its state before the COPY attempt."
- LIST and LSUB rewrite, should fix several bugs in them
- maildir_copy_with_hardlinks = yes was broken.
- mboxes in subfolders weren't selectable.
- STORE didn't accept multiple flags without () around them
- PLAIN SASL-authentication was a bit broken.
- IMAP dates were parsed a few hours wrong
- STATUS command removed \Recent flags from messages
- Several bugfixes to SEARCH command, especially related to multiple
  search conditions
- If auth/login process died unexpectedly at startup, the exit status
  or killing signal wasn't logged.
- mbox parsing might have crashed sometimes
- mbox: when saving mails, internal headers were allowed in input,
  sometimes causing problems (eg. duplicate headers) when appending
  and copying messages
- mbox: X-Keywords headers were duplicated
- Some small fixes to how messages are saved to Maildir
- Next command after STARTTLS was ignored which left the connection
  stuck sometimes
- Dovecot was pretty much broken with FreeBSD