I think that the format should depend on outcome of the discussions you’ll have prior to this with Gitea and Codeberg. I think the 5min. format is short. Maybe a 15 min. introduction with slides. Would be great to have something to demo after that, if only a wireframed concept for how one will experience the vision at the outset, and where it may evolve too. Might try to get some brainstorm be part of the exercise. Involve the participants. And end with something that encourages people to hop onto the community. Might announce a hackathon, or other follow-up event. It might have a prize for the winner to make it extra interesting.
Some real prep work may make this a rocking event. Might get a graphics designer interested to create diagrams and UX designs, etc.
Title-wise I am thinking more about something like:
“Forgefriends and Gitea: Forge federation and the radical shift to Social Coding”
Note that with “Social Coding” there’s another huge ‘marketing’ opportunity. It is a paradigm shift and no one considers coding like this, right now.
I prefer to be a watcher, as I am a much better writer than public speaker, but I can help along the way.