As it turns out, these features will only be available with the next beta, which is due some time in the next week. So in the strict sense, the GP is correct here.
Cool, can I install this on my 4 year old OnePlus One ? Because I can install iOS 12 on my 5 year old iPhone 5S.
Oh please, can you and all GP's stop with this childish nonsense. There are other places on the internet that are much better suited for these type of discussions.
What's more, you don't need to pay anybody $99 per year for that privilege. iOS betas are only available to people with a developer account.
iOS 12 is currently available only as a developer beta, for which you need to pay the yearly membership fee.
Odd, I got a popup on my phone for downloading iOS12 and My development account expired a years ago.
Might be a legacy hangover from having been enrolled in the developer beta scheme with that same device. I just enrolled my spare iPhone 6 into the public beta program and can only get iOS 11.4.1 beta, no iOS 12 beta in sight sadly.