ArcGIS Explorer Soon

ArcGIS Explorer arriving soon.

James Fee quotes on ArcGIS Exlplorer (Beta 2)
"It appears that you can now add just about any local dataset to your digital earth viewer; shapefile, personal geodatabase, raster or KML. Navigation tools are improved as well as a ton of keyboard controls. KML support at release will be KML 2.0 and sync up with ArcGIS Server. There are plans to add KML 2.1 support right after the release goes final so don’t get too up in arms about that" read in it in full.

Come on ESRI go live now, not when ArcGIS 9.2 arrives.