Build 43 can be downloaded from here:
This is beta version! It has not been tested.
[2.1 Build 43] - 17 Jul 2007
o Alarm time was calculated incorrectly for weekly recurring events. Fixed.
o Added support for urls in the lists and to tooltip.
o Tooltip can be left open (or kept hidden) by keeping shift key down.
o Added edit links to Outlook events. The links can be hidden from the settings.
o Added "Disable text formatting" advanced option to disable the wiki style formatting and the hotlinks.
o Fixed Outlook notifications with nested calendar folders.
o Added "DST" to <time> item which can be used to disable DST adjustment.
o Added option for safe uploads to the network calendars.
o Fixed a DST problem which caused some months to be shown incorrectly in certain timezones.
o Fixed window snapping in Linux.
o Added option to close the MAPI connection in Outlook plugin so that the message store file isn't locked all the time.
o Added option to poll changes in the Outlook and automatically refresh when events when something happens.