The first release of this project happened on 12 April 2020 (Easter Day), after a year of on-and-off work. The announcement on the EAB forum went like this:
Today I am releasing my take at a remake of the A500+ mainboard. I know there are already others around, but mine is 100% OpenHardware as usual. This means you get both the schematics and the matching PCB, all drawn in KiCad.
It is still untested, so it might have errors. But I think this is actually an opportunity to showcase the full potential of Open Hardware: download the project files, inspect them and report any errors you find! I can also add you to the github project as a developer if you want. This way we can all work together to get the perfect board.
I think it can already be useful as a troubleshooting tool, in any case.
Enjoy and make good use of it: https://github.com/SukkoPera/Raemixx500