I have just found this link, where there are images and information about new Bontrager Aeolus wheels.
After the 40s were succeeded last season by the RSL37, it was rather obvious that this has to happen to the deeper models of the range, too.
So the old XXX6 are apparently being succeeded by the RSL 51 and 62, both very akin in depth to what DT Swiss and especially Roval.
What I am rather surprised about though, is the RSL 74.
I find it unlikely for these to be general spec on any Trek roadbike, even the Madone.
This might portend the long overdo Speed Concept disc… just speculating here.
It says 23mm internal in the article, which again sounds very weird. Why would the deeper, more aero wheels have wider internal, than the 37?
Here is the link:
I used Google translater and it somewhat worked out.