Haven't done much apart from plug it in to verify it works, and blow me, it hasn't got the nodeMCU firmware on it!!
Anyway - easily rectified - just hold down the flash button for a second whilst booting up - and now it's running the latest lua pre-build.
The board looks and feels really nice, high quality feel and detailed silkscreen - lots of via stiching around, just the whole thing seems high quality - much more so than the large, cheap dev board that's just weird! or the other yellow ESP-12 based one.
Looking forward to getting to know it, good work Zeroday (and colleagues?)