@LukaszOlejnik I thought this was already the case, but maybe I'm only thinking of the password rotation requirement.
Unfortunately, despite NIST's stance, the misery will remain for many of us until the PCI (payment card industry) standards also change.
@BenAveling @mdwyer @LukaszOlejnik NIST SP 800-63B (updated 2017-06) section 5.1.1.2:
“Verifiers SHOULD NOT impose other composition rules (e.g., requiring mixtures of different character types or prohibiting consecutively repeated characters) for memorized secrets. Verifiers SHOULD NOT require memorized secrets to be changed arbitrarily (e.g., periodically). However, verifiers SHALL force a change if there is evidence of compromise of the authenticator.”
Edit: I see now this thread is about the latest version of SP 800-63B! The one I quoted above is 800-63-3, which has been replaced by 800-63-4. Seems they turned a bunch of SHOULD NOTs into SHALL NOTs.