Not sure if this has been mentioned here before, but just had it pointed out to me by a friend:
http://www.e-basteln.de/computing/65f02/65f02/Essentially a drop-in replacement for a 65C02 but the core runs at 100Mhz with the external bus running at whatever clock you give it.
Doesn't look like an on-going commercial project and due to the nature of the components unlikely to be offered as a kit either (unless you're a real whiz with SMT and BGA technology) but all the details are there for the enthusiastic!
Cheers,
-Gordon
_________________
--
Gordon Henderson.
See my
Ruby 6502 and 65816 SBC projects here:
https://projects.drogon.net/ruby/