Rui Carmo
This is interesting. A trifle more expensive, a little faster, more RAM, flash and PIO, and a bonus set of two RISC-V cores you can use instead of the slightly faster ARM ones (both sets already come on the chip, and the active set is selected upon boot). Oh, and signed boot.
Plus the kind of backward compatibility you’d expect from them–even down to, unfortunately, sticking with a micro-USB port instead of moving to USB-C (which nearly all the partner boards mentioned have).
We’ve yet to see if it can match the ESP32 in terms of deep sleep power consumption–early reviews hint at that finally being possible, but it doesn’t seem to be quite there.
I expect much noise to be made about the inclusion of RISC-V cores, but that tide is going to take so long to come in that I will continue to consider it a curio for the next year or so.