It looks like the tablet-focused productivity software, optimised for the ARM processor, will come pre-installed on devices running the Windows RT OS, which is good news. But these will simply be preview versions of Word, Excel, PowerPoint, and OneNote. By loading up Windows RT tablets such as Microsoft Surface with this touch and battery life-friendly version of Office 2013, Microsoft is including Word, Excel, PowerPoint and OneNote at no extra cost.
Again all preety good and not available to those who buy Windows 8.
But Office for Windows RT will lack email sending features for Outlook and other desktop mail applications. Macros, add-ins and creating Data Models in Excel 2013 RT are also missing along with features that rely on ActiveX controls or 3rd party code such as PowerPoint Slide Library ActiveX control and Flash Video Playback.
You will not be able to search for embedded audio and video files, record A/V notes, record narrations in PowerPoint 2013 RT and importing from an attachment scanner with OneNote.