This is a voluntary defense. If Arreola picks up the belt he will have to fight either Wlad or Vitali in a rematch. Vitali's next mandatory is not due until March 2010.
^Just don't see it happening man. Vitali's never been down, much less KO'd. Arreola is not the most elusive fighter, has to deal with Vitali's reach/power, and JUST proved that he can be hurt in against Walker... Because of these things I don't see Arreola having much of a chance unless Vitali get's injured or cut badly enough for the fight to be stopped...
We'll see within the first 2 rounds if Arreola is prepared for Vitali's awkward style. If we see Arreola off-balance a lot and not connecting a single power punch then this will be an easy night for Vitali. He will simply stay out of reach and magically always be 2-3 inches away from Arreola's gloves.