Microsoft always releases a new Mac version of Office one year after releasing a new Windows version of Office, and the 2011 version is now available, following Office 2010 for Windows.
The two biggest changes over Office 2008 for Mac is that Outlook now replaces Entourage as the mail/calendar/contact/task application, and macros are once again part of the team. This means you can now record, write and play macros using Visual Basic for Applications. Microsoft inexplicably removed VBA in Office 2008.
Like the 2008 version, 2011 looks and feels like a native OS X application. They didn’t try to stuff a Windows program into a Mac. So the toolbars and panels are right where you left them, and there are some cool, new features and the look and feel is updated, like Excel PivotTables:
PC Magazine has a great slide show of screen shots from Office 2011. Take a look.