it isn't out yet. Since the leak in August of last year, Stephenie Meyer felt like she couldn't continue it. She said its on hold indefinately and she'll be working on other projects. She says she doesn't know when she'll get back to it. She said "
Maybe I'll get back to it after a couple years when everyone has forgotten about it."
Personally, that doesn't make any sense. This is probably one of the most anticipated books and she thinks we will all forget about it? I don't think so.
You can read the first 1-12 chapters here. She posted it on her site.
link
ps. All the covers of Midnight Sun that you may have seen are fan made.