In those mock-up pics of the Circa SportsBook, note the VSIN signage and broadcast booth on one side.

VSIN is the same broadcast group that has the studio inside the South Point (run by Brent Musburger, etc.)

I think the have added a studio somewhere back East too (in an Atlantic City casino?)

Info on VSIN:
https://en.m.wikipedia.org/wiki/Vegas_Stats_%26_Information_Network

Pic of the VSIN studio at South Point (photo from the internet):