http://www.kickstarter.com/projects/2084212109/gameduino-2-this-time-its-personal
No one is interested in developing newer hardware. I've tried and tried to interest you all.
Now there is Gameduino 2. The graphics speak for themselves.
This project is open source. Imagine it as a graphics engine for an Amiga.
I know. No one is interested.
It's very nice, on its own (well, with an Arduino).
There's nothing to be gained by adding it to the classic Amigas - it's entirely different hardware. Might as well stick to the RTG solutions for that - at least they're supported.