*sigh*...sadly, no - Saturn will never be emulated on the dreamcast
The Sega Saturn is an incredibly complex system. Even though the Saturn generally doesn't have as good looking games as the playstation, it has something like 6 or 8 different processors that would need to be emulated (this is VERY difficult). Until recently, with the advent of dual-core processors and very nice graphics cards, Saturn emulation on PC was a no go. So, it is almost certainly impossible that Saturn will not be emulated on the Dingoo (or the GP2X, GP2X Wiz, Pandora, etc.).