From StackOverflow, taking the Behind the scenes with the folks building OverflowAI (Ep. 594) where the Notes encourage you to "sign up to be an alpha tester here" which takes you to Labs. The two buttons on Labs are: "Get previews and early access ..." or one that leads to "Contact Sales".
Intuitively the "early access" button would seem to be the one discussed in the prior page for alpha-testing signup - but that part is unclear.
I'm happy to help test, primarily to see if all the new AI search hype can help the C/C++ and Bash/Shell, etc.. "Related" links finally actually be "related" to the question asked. However, I don't want to have my SO interface changed so I'm permanently stuck with the new enhanced features.
Will the "early access" alpha-testing be completely separate from my current SO user-interface, or will it become part of it? If the latter, will there be a way to turn it off and simply revert to the current user-interface (which I'm rather fond of). Sorry for the confusion.