Hey John,
Thanks for supporting TF. It's likely that any of the tilesets that are based on OSM (open street map) data will be updated -- OSM, Open Cycle Map and the new Mapquest layer. The color aerials may also see a new view of Sedona at some point, but I wouldn't hold my breath for it.
Open Cycle might be your best bet for a base layer, not sure. It is possible to do the OSM update yourself, if that's what it comes to.
Good luck.
Scott