micro.dev is different from an actual go framework go-micro.dev ?? (https://github.com/go-micro/go-micro)

Yup, I was the author of go-micro. It was very much a standalone Go framework aka common interfaces grouped together for distributed systems development. By using interfaces they effectively became pluggable abstractions for infrastructure. Unfortunately I don't think a Go library alone solves the problems I was trying to solve so it got merged into Micro which is platform that includes a CLI, API, Runtime, etc. It powers https://m3o.com

What if any is the relationship between https://m3o.com/ and https://micro.dev/ ?

We used Micro to build and offer Micro services on M3O. Every API to you see there is powered by the open source equivalent Micro service here https://github.com/micro/services