Sounds like you can for sure talk to them before that. The feature just gives you a direct link that you can use at any time.
Also Warlock's probably know who their patron is before level 3.
It’s supposed to hit wider availability in 2026 from memory. It’s mostly exclusive to conventions right now.
I almost got to DM it, but I couldn’t make the convention in Canada in the end.
Abalach-Re the Sorcerer Queen
Farcluun
Both are Defilers who are under the process of turning into Dragons but have not completed it like the Dragon himself.
I don’t think the original book ever mentioned his actual name, and even when it was revealed the number of people who it are a little over a dozen. To basically everyone he is just “The Dragon”
I should point out that Dark Sun 4e changed that. They sealed Rajaat, and Borys gained additional power by becoming a full Dragon to keep the seal guarded. The seal required no further upkeep of sacrifices or anything, the Dragon just demands offerings from the other SKs cause he is a tyrant who...