Yup. Ariel just got re-released, and the sequel, Elegy Beach is on its way some time soon, though I will probably wait for paperback. The re-release of Ariel has a rambling bit atthe back about Boyett's life and musing on writing Ariel, footnoted with even more recent bits. One of the parts includes him being very clear about there never ever ever being a sequel to Ariel, and a footnote mentioning that he wrote one.