Microsoft unveiled their new version of Virtual Earth, and it's major. The Google Earth Blog actually reported this story yesterday. My apologies to the blog's author. Here's the official Virtual Earth blog entry. SharpGIS offers a few interesting screenshots. Ogle Earth also has his own interesting report. Amongst the juicy improvements, there is GeoRSS support, GPS GPX support, and even Google's KML format support (this format in being standardized by the Open Geospatial Consortium, which Microsoft just rejoined), there's Bird's eye view in 3D and even a SketchUp competitor in for 3D modelling. A longer more detailed list can be found here in the Virtual Earth Developer Forum.