Any news on this topic?
As a RISC OS user between 1989 and 2001, i'm really pleased to see it again :D
The real problem here is we can provide hardware, and we can point people at public documentation but if you want to support certain chips on the board (LCD controller, HDMI controller, and so on) then you will need to talk to the suppliers of those chips directly.
Genesi can provide referrals but we can't give people the docs - for a start most of them have our company name plastered all over them so they will know who "leaked" them out.
Given that the best you can get is audio and USB without it, no display, no wireless, potentially a lack of other peripheral components which need drivers.. this is a big, big project which runs on an ever increasingly flexible line of SoC's - to maintain RISCOS for MX51 and MX53 and onwards is going to be a lot of effort.
We have put this sort of support on hold while we prep our firmware solution which will allow operating systems to be ported using built-in firmware drivers and abstract developers and the OS on top of a full realtime microkernel - eventually being able to run OpenGLES libraries and applications without knowing even what chip you're using underneath. This is the goal, anyway, but right now.. it's not ready for people to port a whole new OS on top.