No. AFAIK, it is forever. Of course, the statute has expired in the minds of most everyone here (we're either BDI or PDI for the most part), but I guess not everyone in the world excludes JR as the murderer. However, if the GJ did indeed believe that BDI as the indictments for PR and JR seem to indicate, then yes, the statute has expired.
I recently read something fascinating about how the statute can pause if the defendant leaves the state, but I'm not able to find it now. I'm sure if it could apply in this case, somebody would've already found it by now.
Grand Jury info