With Windows Phone 7 Series information being dropped today, the Windows Mobile Developer Blog for Windows Mobile is only sharing cryptic information about what to expect in regards to mobile development.  Will existing apps be able to run in a compatibility layer?  Will existing apps be able to be ported via an easy code upgrade path?  Guess we should now something more in March.  See the full details, or lack thereof, here:

In a companion post on the Windows Phone Blog, we have unveiled the highly anticipated Windows Phone 7 Series. For the first time ever, we are bringing together Xbox LIVE games and the Zune music and video experience to phones. Developers are already speculating about the app platform and tools. All I can tell you is that we are going big at MIX10, March 15-17.

I will proudly say that we are about to launch a very compelling mobile development platform – arguably the best in our history. Even if you can’t join us at MIX this year be sure to follow Charlie Kindel, @ckindel for regular updates on the developer story for Windows Phone.

You can read the full Windows Phone 7 Series press release here.