Being the eternal pessimist, I would be surprised to find out that X10 has even a glimer of thought about a CM15A/AHP update. I don't think they have the technical or financial resources any more. One thing in X10 favor: I'm not an insider, but of the new automation protocols now available (Z-Wave, UPB, Insteon, etc) I don't see any standard really pulling ahead in the market place. I tend to think possible buyers are viewing the multiple standards as replays of the great Blu-Ray vs HD and VHS vs Betamax wars and that's good news for X10.
(yeah, I know, remembering "Betamax" pretty well dates me as an "ole man"...sigh, I even remember "U-Matic").
I wonder what a D&B on X10 would show?