"Windows Mobile 5 is the current OS of choice for Windows Mobile users however the next iteration, codenamed Crossbow, has shown its face, check out the full Pocket PC homescreen shown above! It has a glossy title bar and soft keys and will feature Vista-esque folder icons etc."
While this is the Pocket PC version of "Crossbow", we can be sure that it will have similar ties in appearance to the Smartphone version. According to this article, Crossbow will have strong links with Office 2007 and Exchange 12. One has to wonder if this includes the Smartphone version of Crossbow as well and if will we finally see Office Mobile available for the Smartphone, or at least functionality beyond just viewing documents.