The AKS release calendar specifies that 1.18 will be AKS GA in Augustus 2020, however in the Azure portal it is still specified as Preview (for West Europe region at least).

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Latest release on https://github.com/Azure/AKS/releases says 1.18 was GA on Aug 31. Docs and release don't align.
@Redeux
But the Azure Portal still says it is in preview?

I’m with you @Styxxy its confusing. I came here to open a similar issue but decided to comment with my observation on yours to keep the info consolidated for MS.
Thanks for the feedback! We are currently investigating and will update you shortly.
There's no release note for the GA of 1.18 yet. The announcement on past releases is to provide awareness that 1.18 will GA on the release of Aug 31st. Which it is, but that release is taking a bit longer than usual (which is why there aren't any release notes yet), you will see the notes coming up soon.
Thanks for bringing this to our attention. We will now close this issue. If there are further questions regarding this matter, please tag me in a comment. I will reopen it and we will gladly continue the discussion.