Microsoft blogger Chris Schneider reports that Outlook 2013 RT will become available on Windows RT tablets as part of the free Windows 8.1 update:
Today at Computex 2013, Tami Reller, CFO and CMO of Microsoft's Windows Division, announced that Outlook 2013 RT will be available on Windows RT tablets as part of the free Windows 8.1 update coming later this year. This means that if you have a Microsoft Surface or a Windows RT tablet made by one of our hardware partners, or you are planning to buy one, you'll soon have access to the familiar tools in Outlook that help you communicate with others, manage your contacts and appointments, and find information fast.
We're always listening to our customers and one piece of feedback was that people want the power of Outlook on all their Windows PCs and tablets. In fact, a Morgan Stanley research study found that 61% of people shopping for tablets consider Microsoft Office to be the single most important software feature. We're pleased to have Outlook 2013 RT join the other best-in-class Office 2013 RT applications including Word, Excel, PowerPoint and OneNote. And just like those applications, Outlook 2013 RT delivers a great touch experience for people using tablets.