First Confirmation that Murray is On Board Ghostbusters 3?

Whoa. Entertainment Weekly just got a great quote in an interview with Sigourney Weaver, where she talks about the Scream Awards, chatting with Bill Murray there and yes, him confirming that they are going to do the third film.  But, but, and why must there always be a but, she also says that nobody has read a script yet.  WTF?