MapDotNet Server 2007 Beta
Drawing Polygons/Polylines Feature
"MapDotNet now supports Microsoft’s out-of-band technology for ASP.NET called "Atlas". Drawing, editing and map redraws now occur without a page post-back improving performance and eliminating full-page redrawing."
Also an ArcIMS and ArcSDE demo using MapDotNet
Other developments are drag and drop controls
Release date "late fall (autumn) 2006"