From all i know he will continue to work, i simply can't imagine Paul not being active in one capacity or the other. Since i have no idea under what kind of contract he worked i can't, and even if i knew i wouldn't, tell what the financial arrangements around his retirement from Maxon are. I also don't think this is something i, or anyone else outside of the directly concerned parties, should be involved in or speculate about.
Frome an absolutely personal pov i can easily see him as a member of a board of one, or more, companies related to the industry. His experience is invaluable.