Here's the official synopsis:
At the heart of the show are the musical's composer Tom (Christian Borle), who is gay, and the lyricist Julia (Debra Messing), who is somewhat against the idea of a Marilyn Monroe-themed musical. The plot will follow follow an out-of-town tryout of a Broadway musical, and centers around a songwriting team who write a musical about Marilyn Monroe based on an offhanded remark from an assistant. They post a showstopping number on YouTube. When it's a viral hit, a producer (Anjelica Huston) who's looking to recapture success long past decides to produce the musical. There are two choices to play Marilyn - Karen (Katharine McPhee), a talented young newcomer, and Ivy (Megan Hilty), a theater veteran.I have no idea who any of these people are, but I'm on my way over right now to check it out and snap some photos.
UPDATE: They wouldn't let me go into the Temple to see the set or anything (no one ever does), but they are taking up blocks of parking with their cars, trucks and equipment. I imagine the local residents are going to be livid about this tonight, when parking in that area becomes a premium.