One thing that has been striking by its absence, (at least for me), has been the lack of coverage of Windows Phone (formerly Windows Mobile) and mobile related topics here at PDC. There has been some coverage of the .net Micro framework and sensor and location related development with Windows 7 but nothing trully focussed on Compact framework 4.0 and mobile devices.
According to the second keynote yesterday we will have to wait until the MIX 10 in Las Vegas in March 2010 to find out more on this, so it looks like the story and roadmap is not quite there as yet.
Still lots of other good stuff to keep us occupied for the moment…...