Brad can give you the official answer, but since he's offline for a few days I'll just say iPC owners have nothing to worry about. All that's changing is that you can't purchase a new iPC.
Support for the iPC is not changing at all. It's still under active development and will get software and library updates just like the rest of the Wholehog OS line of consoles. Hardware parts and service are also still available.
As Eric said, the Hog iPC is no longer being manufacturered, but as it uses teh same software as all our Wholehog consoles it will continue to be supported for a long time. All new software will continue to funciton with Hog iPC. We always maintain parts and service for our discontinued products for at least seven years, and I expect no difference for the Hog iPC.