We got a little taste of this last night
The host is Josh Groban, with the normal 3 judges... Ludacris, Keisha and Brad Paisley. To participate you need to download the Rising Star app (took about one minute). Log into the game and vote yes or no on each singer. The singer is behind a huge wall. If the singer gets 70% or more positive votes, then the wall will rise. Not sure what happens after that lol. Anyway seems interesting enough. I like the interactive part.