The fact that cbs sports is positively linking UConn to the Big 12 tells me it’s a done deal and details / due diligence being worked out. Their preference would be to name this round of additions in one announcement.
I feel they consider UConn and Colorado as in and are waiting to see if they can pull in Arizona and (either Az St, UNLV, or Utah). If they take in 2, great! Those 4 would be outstanding for the conference. The potential is HUGE.
The idea of adding NYC, Denver, Phoenix, and Las Vegas is branding/marketing genius.