The external developer who started the work and was highly praised by Gitlab offered to work for them if they made a team around federation --> nothing.
A group of French universities are now considering making a group in order to work on it themselves and contribute back to Gitlab.
Gitlab will most likely use it as a big selling point once all the work has been done by externals with little to no cost to Gitlab.
I moved from GitLab last year, was a great decision for productivity