Is There ANY News

on the cores and support files for the 861?..
I bought 4 because they really looked interesting, 64 MHz? For What? A/D conversions? perhaps for USB? … and that there was a core under construction. Any success?

Doc

ATtiny861? Only (some of) the timers run 64MHz...

that there was a core under construction. Any success?

Tom Carpenter has a core for the ATtiny861:

https://github.com/TCWORLD/ATTinyCore

Coding Badly has a exeperimentel core

http://forum.arduino.cc/index.php?topic=173408.0

Timer1 can run at 64MHz in a Tiny85 as well...