What I have seen of the statement of requirements for the Kingston Class replacement so far, is a slightly longer ship, small caliber main gun, modular payloads including MCM , drone capability, full size RHIB, good range, 25 knots, small crew size, Lloyds standards. They are taking the original requirements for the Kingston Class and improving upon the deficiencies. It may be an existing design which I favor the River Class or it may be a home grown design and I have seen concept art for it. Remember any replacement will have do the MCM job and be a patroller.