Firefox, an existing dev on the GP2X scene, is currently working on some Homebrew and is also looking at porting a Jaguar emulator to the Dingoo
He looks as if he is creating a sort of Virus/Zarch hybrid for his homebrew test, with the image above looking very interesting.
I spent several weeks looking for a suitable game to port to the Dingoo, but in the end I thought I'd write a simple game that just needed to plot coloured pixels and read button presses. That makes the hurdle I have to jump to get it running on a new platform quite low.
Interestingly, the random number generator doesn't seem to work on the Dingoo. Instead of ground squares of random colours centred around green I get squares of a uniform colour (which is why I've turned the corner dots on). But the maps will eventually be generated by a separate program and compiled in anyway.
Defo someone to keep an eye on, will keep you posted as I find more info on whats being created and hopefully get our hands on some WIP software to test out.