Gifts, Voices, and Powers; Le Guin. Yes. I read these out of order, starting with Powers because I didn’t notice it was part of a series (one of the hazards of avoiding knowing anything about a book before reading it). The reading didn’t suffer much from the different sequencing. These are sturdy young-adult works, exploring complex themes as Le Guin can.
I can find no indication whether there will be more Annals forthcoming.