When was the IMAX theater put in the Temecula Stadium 15?

Answer 1

As stated in a blog by Big Movie Zone Blog sometime in November:

"Regal Entertainment Group announced today that a new IMAX Experience screen will debut Friday at its Edwards Temecula Stadium 15, starting with midnight showings of the 3-D "A Christmas Carol." The coming opening had already been touted on digital message boards outside the multiplex at Promenade Temecula mall. Still unclear was the fate of an IMAX theater that was being developed in nearby Murrieta by another local moviehouse operator. This is the second time that Tennessee-based Regal has announced a new IMAX for its Temecula theater. In February, it put out a release noting that Edwards in Temecula was among five Regal theaters nationwide set to debut new IMAX screens in the second quarter of 2009. The theater's development was part of a 31-screen deal reached between Regal and Toronto-headquartered IMAX Corp., reaching 20 U.S. markets. At the time, longtime Inland movie theater owner Bruce Sanborn, whose family operates The Movie Experience in Murrieta, said he was surprised by Regal's announcement, because his company had been involved with IMAX to bring a theater to his multiplex, on California Oaks Road near I-15, since 2007. Sanborn said his theater had an exclusivity agreement with IMAX to serve territory running north to Riverside and south past Temecula to the Agua Tibia Wilderness area, straddling the border with San Diego County."

So, in this case, the IMAX in Edwards Temecula Stadium 15 opened on November 6th, 2009.