On October 24 2009, and the next one will most likely be the rematch in May.
An interesting point I hadn't really thought about, right now it looks like only 2 of the 5 belts have any real possibility of changing hands in the near future
(w/ that said, war Maia)
I don't see either of the 2 fights on Saturday being competitive, which isn't saying I don't WANT them to be.
That stat isn't all that significant considering there's been only 2 other title matches since then.
I'd bet $50 that the 2 fights on Saturday won't be competitive, making it 5 title fights (counting Murr vs Carwin)