I can't imagine (and most reports seem to agree) that this would be a one off thing. Surely Malkmus has seen the example of the Pixies and figures their fans have disposable income now.
So there's another in the list of shocking reunions happening. How long til Bob and Grant decide there's a ton of money to be made in doing a reunion tour playing "New Day Rising" or "Zen Arcade" in their entirety?
Hear it here: www.chairpage.com Its a very fresh record. Granted, its been twelve years or so since Frogstomp, but its amazing to hear how far they have come. Its probably not for everybody, but its worth a listen or two.