Microsoft’s announcement overnight that they’re planning on bringing Outlook to the next version of Office for Mac may not sound like the most exciting piece of news this week, but it is a huge game changer. Forgetting for a second that Microsoft should have done this years ago, banishing that bastard piece of software Entourage to the seventh level of software hell, the move to bring Outlook to the Mac is going to make Apple’s machines even more appealing to enterprise, while at the same time forcing Apple to really bring changes to the way OS X’s Mail, Address Book and iCal interact.