Yes exactly, between Brodie and Brush Country (it eventually dumps you into a Valero on William Cannon). The trails are marked on trailforks as "Williamson Creek Trail" if that helps.
Yes that dark drop right under Mopac! That and about 10 other areas where you would navigate around/over boulders or between trees are now kind of gone. On the whole I'm stoked about the new sections, just a little salty about removing the techy bits.. Do hope they don't smooth over more and more chunk in the area though.
Yep a few weeks ago that small new section Flow daddy or Flow mama appeared right East of Mopac with the steep drops into the creek, I dig that for sure.
At first I thought it was the cross bike people but I doubt it is. Agreed though, I'm impressed that anyone is out there trying to improve those trails.