This is a great article for writers and readers alike on what new trends are hitting in YA.
Ironically, I wrote NAUSAARI a light sci-fi/fantasy with historical elements about 2 years ago and was told it had two many genres to be sellable and that it needs to fit into just one. After reading this, I clearly need to pull that puppy from the shelf and make it purrtty, so I can show it to my agent.
I have to say one of the things I love best about being a YA writer and reader is that like young adults/teens, it is ever changing and often surprising. GO YA!!!!!