Outlook 2007 – with the lasted update installed – now supports multi-year recurrences. This means you won’t need to use 24 months to create appointments which recur every 2 years. Sorry, that is the only change to recurrence patterns. Maybe next time we’ll see quarterly appointments. I don’t think we’ll ever see fifth week in a month because making Outlook handle it correctly when there is not a 5th week in a month would be too difficult.
An update is available for Outlook 2007 that improves Internet Calendar functionality and improves compatibility with IMAP servers
Published June 4, 2008. Last updated on June 17, 2011.