Any plan for a new updated Strapon Model?
Not really, no. Because a new one's already been made. In three different iterations, no less: pre-posed and adjustable, poseable, and "holdable" (the hierarchy is rooted from the tip of one of the straps, rather than the center, to make it easier to animate characters holding it).
I suppose I should release it standalone at some point.
I have a long laundry list of things I need to get around to releasing at some point.