I recently came upon the Mill architecture and I'm really excited about it conceptually, but in practice it really feels like the project has stagnated in the last few years (or, really, since 2014).
In particular, the project looks no closer to implementing a FPGA version. Now, I'm not familiar with embedded chip design, and if someone familiar with the domain comes by I'd be interested to known whether 7 years is an unusually long time for prototyping a CPU design on a FPGA.
But even if it isn't... I mean, in the time since Mill was announced, we've had an entire console generation come and go (PS4: 2013-2020) and virtually no progress has been reported aside from the filing of patents; and the last patent listed on their website is from 2016, 5 years ago.
I really want to be excited about Mill, but the lack of progress reports is making that pretty hard.