Last thursday's GURPS release was GURPS Dungeon Fantasy 19: Incantation Magic by my friends Christopher R. Rice (http://www.ravensnpennies.com/) and Antoni Ten Monrós.
This is an adaptation of the popular GURPS Thaumatology: Ritual Path Magic rules to the Dungeon Fantasy line. It's a self-contained system, however and doesn't require any books outside of the Basic Set and the Dungeon Fantasy line. It gives a pseudo-Vancian feel to spell-casting (and I gather sits somewhere between the magic in Dying Earth and a Dungeons & Dragons-style spell slot system). I haven't gotten a chance to read it yet, but the reaction online has been extremely positive.