It looks like some of the new boards are available and some pre-order for the 25th on Newegg. The Maximus XIII Hero seems to be fairly expensive..
I do not see any indication the Intel 11th processors are yet available. I suppose since the new boards will work with 10th gen processors, that is an option..
It will be interesting to see how product availability will play out since the last release was fairly hectic, at least for me.
Maximus Z890 Hero,
Intel Core Ultra 9 285K