M2Doc extensions for Capella 6.0.0 has been released. It is based on M2Doc 3.2.2.
You can install it using this update site:
https://s3-eu-west-1.amazonaws.com/obeo-networkaggregation-releases/capella-extensions/6.0.0_M2Doc3.2.2/full
If you want to download the zipped version of the update site or install older versions please visit this page.