From the release notes:
1. New features
You can now customize Subject Header modification placement (head or tail)
by changing the new option 'bayes_subject_mod_pos'. (ticket #74)
NNTP module now caches articles received with the message number specified.
You can now jump to message header/message body/quick magnets/scores in the
single message view by clicking links on the head of the page. (ticket #77)
You can now filter messages shown in the history using 'reclassified' option.
2. Windows version improvements
The minimal Perl has been updated to the most recent 5.8 release. Since this
release of Perl only officially supports Windows 2000 or later POPFile 1.1.1
may not work on Windows 95, Windows 98, Windows Millennium or Windows NT. The
installer will display a warning message explaining that POPFile may not work
properly on these old systems.
The Windows system tray icon's menu now offers options to visit the support
website and check for new versions of POPFile.
If the automatic version check feature has been turned on (via the Security tab
in the User Interface) then the system tray icon will change and a message box
will be displayed. This check is performed once per day.
Now that all known problems with the system tray icon have been fixed it will
be enabled by default in new installations. (ticket #106)
The Windows installer now preselects the relevant components when upgrading or
modifying an existing installation. (tickets #13 and #26)
The Windows installer can now display the UI properly even if the database is
very large (tens of MB). (ticket #109)
Fixed a problem that POPFile does not work on Japanese Windows when the path
of the data directory contains non-ASCII characters (e.g. the user name is
written in Japanese). (ticket #111)
The installer is now compatible with Windows 7.
3. Mac OS X version improvements
The installer for Mac OS X 10.6 (Snow Leopard) has come.
Since Snow Leopard includes Perl v5.10.0, the Perl modules which are supplied
with the POPFile installer v1.1.0 or earlier aren't compatible with it.
Starting with this version, two versions of installer will be released.
One is for Snow Leopard, and another is for the former versions of Mac OS X.
The name of Snow Leopard installer will have '-sl' suffix.
4. Other improvements
The users who are using very large database (tens of MB) will be able to
reclassify messages faster. (ticket #108)