Details are in the blog post. Hope it's helpful!
https://stubarea51.net/2020/12/30/mikro ... spfv3-bgp/

It is helpful, but actually the syntax has changed drastically between beta2 and beta3, so a lot of what you have has to be adjusted quite a bit for beta3 (unfortunately).I've been working on a lab for ROSv7 to provide examples for IPv6 config with OSPF and BGP.
Details are in the blog post. Hope it's helpful!