I don't know of any announced support as of yet. Several companies are for surely going to wait until the final release of OS X to add support. (or maybe just before.) I am saying this because look at the printers. Several companies are not saying anything or they are saying that they will make drivers available when the final release is out. The interesting thing is that several of these compaines make scanners also, so if they are going to make drivers for their printers, they certainly going to make drivers for scanners for OS X.
