This has been a big topic over at SIGTalk, and the consensus there was it wasn't going to happen.
Like some PPs, I'd prefer it to be smaller or flatter than the regular 365; do consider that gun pocketable with an Alabama kydex pocket holster. And, despite some stiffness in the hands, really consider the 9mm version to be extremely 'shootable', and tolerant of a lot of shooting.
Neither of these last really describes the LCP; still keep an original one as a high concealment option, but the damned things just aren't fun to shoot. The new Max, and the LCPII, both bite my trigger finger in recoil, tho' their trigger is better than the original.
But there may be some real market for the new gun; it won't replace my G42, which remains just a little smaller and lighter than the 365.
Moon