If Microsoft is able to hold the schedule, we need to start considering how managing and running Longhorn applications is going to be. Applications utilizing Longhorn will be based on the Indigo application framework. I stumbled across this article about Indigo. It is worth reading! And as the article ends -
The impact of this technology will not be small. Anyone who builds distributed applications on Windows, especially applications that must interoperate with those on other platforms, should pay close attention. Indigo will significantly change their world.