Good to hear! Published as RFC 8984, JSCalendar is stable; of JSContact, current draft <https://datatracker.ietf.org/doc/draft-ietf-jmap-jscontact/>, <https://datatracker.ietf.org/wg/jmap/about/> suggests they’re aiming to submit it for publication in about April, so there will probably be editorial and possibly minor changes only at this point.