The effortLevel setting description was simplified from "Persisted effort level for supported models. \"max\" is session-scoped and not persisted." to just "Persisted effort level for supported models." — the session-scoped restriction on "max" has been lifted.
Evidence
Effort level schema change (search for "Persisted effort level for supported models")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
