Yup, they do, well, at least those we use. However Boeing also advises us to bleed all of the headwind additives off over the threshold and only keep the gust additive in, so be prepared to go below the bug (if you bug Vref+ corrections).
Dunno about others, but the lowest normal flap setting for approach on the 737 for us is 30, 15 in case of one engine out and some other non normal conditions, 25 is not an approved landing flap setting (but is allowed for take off). With 30 you need quite a big tailwind to ever go below stabilized criteria N1 (40%) at which point thrust level response is fairly fast. Stabilized means being able to maintain at least that N1 from over 1000ft (we have to be stabilized with landing flaps setting and checklist done by 1000ft AGL) down to flare, if unable a go-around is mandatory.