While I would love a new Sega console, it is very unlikely to happen, and surely they wouldn't even talk to the people from the link above.
Sega isn't the same company anymore, they are a shadow of their former self and the closest to hardware they get are the arcade machines, which are a completely different thing.
But even IF they were to release a console, it would be nothing like this "proposal". It just looks like a mini PC running Linux, and Sega wouldn't take stock PC components OR an open operating system to make a console. They would literally use nothing from this proposal, not even the design which is not in line with anything Sega would do.
Additionally, that work (the mock-up) is by far the easiest part of launching a console. Sega could do that work on their own in no time to their own exact spec. Perhaps they even have dozens of mock-ups laying around their HQ that never went further than that stage, because they wouldn't carry on with the insane resources needed to launch a competitive console that would likely not compete successfully with the Xbox or PlayStation without needing even more insane resources. Even if they still have such resources, there's no way they would take the risk that could put the whole company down.
A NES like "nostalgia" console with some old games build it? Sure. Next gen console? Extremely unlikely, and if there ever is one, it 100% isn't going to be based on this proposal.