i'm 15 years old and i feel it's already too late to live. don't you?

To answer Xtian's question, no, M83 did not sound this 80's before. They used to be a bit more ambient. But it's not just 80's that they're going for here, it's 80's teenagerdom, and that's what makes me so ecstatic about it. Allmusic.com's review says it sounds like "the soundtrack to the most glamorous film John Hughes never made", which is about right. As if to drive that exact point home, the video for "Graveyard Girl" looks like a clip from said movie:

http://www.pitchfork.tv/node/466