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Also in an Arizona Republic article here, we find that Filiberto's is taking over the location at 32nd St. and Greenway at the former Arby's spot. A quick check on the Filiberto's website, however, does not yet show a restaurant there.
Update (5-14-2011): Filiberto's to open Memorial Day weekend
Update (5-27-2011): Filiberto's is now open