Kanye's got a new look and some new rhymes!

The rapper debuted a decidedly throwback look with shaved lines in his head this weekend ... but more important, West debuted some new music -- or at least someone leaked an impromptu rap by Kanye which seems to be some new bars we can expect from him on his next release.

Kanye had a busy weekend, apart from hitting the barber shop and the recording studio ... he got a visit from a super-fan which X17 caught EXCLUSIVELY on tape. He got hit with a leaked upcoming single from former friend The Game in which the rapper describes in some explicit language his sex with Kanye's wife Kim Kardashian. And last, but not least, Kanye sued former BFF Jay Z's Roc-A-Fella record label. He wants money for making "Blueprint" a humongous hit. So dude's been busy!