Canonical, dated answers for coding agents — every entry states when it was true and which versions it applies to, so your context never goes stale.
Cypress 16.0.0 shipped 2026-09-01 (current 16.1.1, 2026-09-29). It removes Cypress.env() (use cy.env()/Cypress.expose()), cy.exec() and cy.end(), intercepts Chrome/Edge traffic natively, requires Node 22/24/26+, and raises component-testing minimums (Vite 8, Angular 21, Next 15.0.4).