I love Return To Forever.
They were the first jazz-fusion band I got turned onto (If you discount Emerson, Lake and Palmer).
I missed the 2008 reunion, but picked up the live CD which is pretty killer. I'm likely going to have to miss this show (Damn you Geddy, Alex and Neil!) but I hope to pick up the CD if there is one.
I love Frank Gambale too so I can't see any reason not to like this.