This is what my MA and PhD are in!
There's a book just come out, I read a proof copy and loved it, called The Sky is Everywhere, by Jandy Nelson. It's funny and charming and really entrancing, but have some tissues handy, too. I had to come inside because I was sat in the garden, reading and sobbing.
I know it's been briefly mentioned, but Philip Reeve's Mortal Engines is a superb book. It's incredibly visual, and for a short book packs a lot of punch. It's just been optioned as a film, and done well I think it could be spectacular. One of my promises to myself when I decided to do a PhD was that I'd put time aside to read further along the series.
Geraldine McCaughrean's authorised sequel to Peter Pan, Peter Pan in Scarlet, is wonderful. The writing is so beautiful I actually text my friend an excerpt from the train, and it's got a wonderful magic to it. There's a sense of melancholy to the book that really rings true, the children all falling silent when Peter asks them to play war has stuck with me.