This update for Outlook 2007 adds support for the following Internet Calendar features:
Users can now respond to a meeting invitation that is received in iCalendar format with a proposal for a new meeting time.
Extended yearly recurrence patterns are now supported for appointments or meetings that recur every year or every several years.
This update also improves the compatibility between Outlook 2007 and some IMAP e-mail servers.
Download it
here. Read more details about all the other fixes included in the rollup
here.
If you check all the other fixes included, the combined total is pretty massive. I've been running this update for the past few days and Outlook seems to be a bit snappier overall.