.io domain might be going away

Summary

The United Kingdom is relinquishing sovereignty over the Chagos Islands, which had the "io" country code. ICANN's rules state that two-letter top-level domains must be country codes, and that therefore the .io domain must be retired.

What is the current bug behavior?

I run a blog on a subdomain of .gitlab.io. It has excellent search ranking, and I'm concerned about all of those requests having to be redirected.

What is the expected correct behavior?

I think GitLab should implement an option allow Pages users to switch to a subdomain of a different domain immediately while leaving the old site up and running but redirecting to the new one.

For my purposes, if I had such an option, I would enable that option as soon as ICANN announces that they have decided to move forward with retiring the io ccTLD so that I can maximize the amount of time that the redirects are in place while also being able to start linking to the new site immediately.

If this isn't in the plan then at the very least I would really like to know what GitLab's plan is for this potential ICANN announcement.

I am grateful for the Pages product but this potential domain change has me stressed, so I would like to know what's going to happen as soon as possible.

Output of checks

This bug happens on GitLab.com