Here are the theaters listed so far, conveniently copy-pasted from slashfilm (nothing but the logo is showing up for me at the Regal page):
CA Irvine Edwards Irvine Spectrum 22 & IMAX
CA San Diego Edwards Mira Mesa Stadium 18 IMAX & RPX
GA Atlanta Regal Atlantic Station Stadium 18 IMAX & RPX
IL Chicago Regal City North Stadium 14 IMAX & RPX
NY New York Regal Union Square Stadium 14
PA Warrington Regal Warrington Crossing Stadium 22 & IMAX
TN Knoxville Regal Pinnacle Stadium 18 IMAX & RPX
TX Houston Edwards Houston Marq’E Stadium 23 IMAX & RPX
WA Seattle Regal Thornton Place Stadium 14 & IMAX
Updated to add:
Explains what happened with the Regal page.