Microsoft recently published the Service Pack 2 for its current Office suite for the Mac. The update is available for download in many languages.
If you are interested in what changes the update brings you, have a look at the Description of the Office for Mac 2011 14.2 update.
Microsoft highlights the following changes for Outlook:
• Sync performance with Exchange server and IMAP,
• Performance improvements while deleting multiple items,
• Displaying email message content, and sending email.
In addition you now can schedule resources in the calendar, and the Week of the year (week number) can be displayed in the calendar.
For the other programs – Word, Excel and PowerPoint – Microsoft mentions the following changes on their Mac blog:
Word, Excel, and PowerPoint have improved performance with additional modest improvements. For example, we updated PowerPoint to take advantage of full screen view in Lion, and we improved grammar checkers for Italian and German languages. We also made it easier to work with Office documents on SkyDrive and addressed several smaller issues in response to your feedback.
As (almost) always, it’s probably a good idea to just run the update as it usually also includes some minor bug fixes that have not been mentioned.