Developing a nice and performant Windows Mobile User Interface is not so easy, and adapt your work to different screen size and for different platforms is a pain.
Microsoft today has announced a new library called ScreenLib that wants to help all the mobile developers to perform this task in a better way.
ScreenLib is actually downloadable from here.
Microsoft has announced that "Our plan is to include it in the next version of the Windows Mobile SDK" so we've lots of chance that in the future we'll see something more "productive" for designing attractive mobile interfaces.