I work in this industry and know the people making these decisions and I'm not aware of anyone in favor of releasing the RFC 2606 reservations.

Would be done by someone asking for forgiveness instead of permission. :)

That's not remotely how ICANN works though. Everything always takes many years and has a million different discussions, processes, veto points, etc.

It would start off outside of ICANN, like Unstoppable Domains.

Edit: wow, ENS has .test domains: https://docs.ens.domains/contract-api-reference/testregistra...

Those are fake domain names. They don't resolve in the root DNS nameservers. This is one of the many reasons that "alternate roots" are terrible and will never be widely adopted.