Great news! SharpMap v0.9b1 has now been released including the full source code. v0.9 is a major upgrade compared to v0.8, with many new features and enhancements.
Get it now from the SharpMap website.
Check out this cool touch-screen, which halfway through the movie shows a kick-ass interface to navigating both 2D and 3D map using your fingers. Gotta get me one of those :-)