Swinging through Tokyo on the way back, I saw a new Diana Wynne Jones book in a bookstore. I was surprised, because she died a while ago. Her family found the manuscript, and her little sister, who was one of her first audiences, finished it. It's called The Islands of Chaldea, and I'm on my second time through it. I like it. It doesn't have the crazy hilarity of Howl or Chrestomanci, or the bleak mystery of Homeward Bounders.
It's more like her straight-up take on the classic fantasy quest story: a junior Wise Woman, in a sort of mythical British Isles that never was, goes with her aunt, the Wise Woman, to break the spell on the isles. One of the islands has set up a barrier in the sea separating it from the others, and this is ruining the economies of the other isles. And although it's a slow pace-- they have to walk through pretty much every island before they can do it-- it's very thoughtful. I like her set-up of each of the islands: the cow raiders on one, the bards with the magical powers on another, the priests who regulate absolutely everything. The aunt, the Wise Woman, is almost certainly someone DWJ didn't like in real life: she's tough as steel and stubborn as a donkey and very quick to put anyone down. And of course there were a few semi-unexpected things, as to be expected with DWJ. So even though it's not my favorite of hers, I still liked it a lot.