Microsoft is now taking orders for the Surface RT. Pre-order yours here: http://surface.microsoftstore.com/store/msstore/Content/pbpage.Surface?ESICaching=off&WT.mc_id=FY13WinHH&wt.mc_id=fb_po
Exchange, SharePoint, Lync and Office 2013 have all gone RTM. Microsoft will begin migrating Office 365 tenants starting in November 2012.
I’ll post more about my adventures at MEC 2012 and the Office 365 Ranger-Ignite event in Redmond soon.