WCAG 2.2 is now a standard.
That means it’s (probably) now the de facto default against which your website or apps will be judged if a case is brought against you.
Although I would guess most jurisdictions will give you 6-12 months to catch up, depending on the scope of your organisation.
Update your accessibility statements, if you need to. Basic standards are still:
Under the hood, not much has changed. Biggest updates are on :focus styles, and the visibility of focused elements. Oh, and authentication. Not being able to rely on cognitive challenges is going to be a big change for many organisations.
I'm a service designer in Scottish Enterprise's unsurprisingly-named service design team. I've been a content designer, editor, UX designer and giant haystacks developer on the web for (gulp) over 25 years.