Generally speaking, this is NOT a new show.  After an initial try-out run in Stratford, England, the original broadway production of Carrie: The Musical opened in 1988.  It featured Linzi Hately in the title role and Betty Buckley as Carrie’s mother, Margaret.  The show was torn apart by critics, and it closed after only 16 previews and 5 performances- making it one of the most expensive broadway flops of all time.  Despite this, Carrie: The Musical gained a large cult following over the years.  Bootlegs of performances, scores, and other memorabilia from the show survived, and some individuals even staged un-authorized productions.

In 2009, a reading of a completely reworked version of the show was held in New York City featuring various new songs, lyric/book changes, etc.  The reading also had an all-star cast including Marin Mazzie, Sutton Foster, Jennifer Damiano, Matt Doyle, Diana DeGarmo, John Arthur Greene, and Molly Ranson as Carrie.  

In 2010, it was confirmed that a revival of Carrie: The Musical (including further changes) would be produced off-broadway at the Lucille Lortel Theatre.  The show officially opened on March 1st, 2012 and closed a month later after a limited engagement that included 34 previews and 46 performances.  Soon after, Ghostlight Records announced that they would be releasing a cast recording of the show on September 25th, 2012.  It was also announced that the rights to perform the show would be made available starting in spring 2013 (as well as a Vocal Selections book).  If you’re interested in reading more about the show, check out the Wiki page.