Brian Flood has finally (j/k Brian) released Arc2Earth Publisher. Many have been part of the beta and have seen the power of publishing ArcGIS maps online without using complicated or expensive servers.
Arc2Earth is a single program that comes in 4 different versions: Standard, Professional, Publisher and Enterprise. When you buy one of these versions, your serial number will unlock different functionality in Arc2Earth. Each higher version contains all the functionality of the previous version. For instance, if you have Publisher, it also includes everything that’s available in Standard and Professional. Please look at the feature grid here to see the differences between each version.
Brian’s also announced a new Arc2Earth blog and appears threatening to blog more about general GIS topics again.
The demo is here.