We expect to learn a lot more about Microsoft's plan to entice developers to Windows Phone 7 at the MIX 2010 developers conference. Until then (March 15-17), aspiring WP7 devs have to rely upon rumor and innuendo to feed their curiosity. So here you go: three purportedly official Microsoft docs from January that provide a glimpse into Microsoft's Windows Phone OS 7.0 Application Platform. First up, the docs claim that WPOS 7.0 is built around Silverlight, XNA (like the Zune HD), and the .NET Compact Framework -- a mostly clean break from WinMo's past as far as developers are concerned. Native apps are restricted to OEMs and mobile operators in o
