The nine new criteria, one paragraph each

WCAG 2.2 added nine success criteria. Most are tightenings of existing rules; three are genuinely new constraints.

The three that change daily work

2.4.11 Focus Not Obscured (AA) — sticky headers can no longer cover the keyboard focus indicator. If your nav is sticky and your focus ring is on the second visible item, the spec wants the page to scroll until the focused element is visible.

2.5.7 Dragging Movements (AA) — anything you can do by dragging must also be doable with a single tap (or click). Card-sort interfaces, image carousels, drag-to-dismiss banners — all need keyboard equivalents.

3.3.7 Redundant Entry (A) — checkout flows can no longer ask the user to re-type information they've already entered (billing address re-entered as shipping, etc.). Auto-fill is acceptable; re-typing is not.

What stayed the same

Colour contrast ratios. Heading structure rules. Image alt requirements. The fundamentals of WCAG 2.1 AA carry over unchanged — 2.2 is additive, not a rewrite.