From the list, it looks like Tamiya's just put together everything they're already manufacturing into an R package.
I doubt they're going to come out with another optional chassis. The DB-01 already got it's hop-up chassis - the carbon reinforced one. If they're going to make a lipo-friendly chassis, they're going to make it different enough to call it the DB-02 or DF-04 or TRF511X-MSXXX-MRE-WCE2009 so that they can sell us this lipo-update in the form of new kits to all us Tamiya schmucks.
