I like them! I was a little worried but I think they look awesome!
The armor is a nice touch! It's also a gathering of knick-knacks and crap they probably found that people threw out. Obviously Leo is going to sport his unique samurai armor since he is the leader and tries to emulate the ideals of bushido as much as possible. The gauntlets and shin-guards in general are what I expect to see in terms of "ninja armor".
Looks like Donatello is also sporting some headphones and probably has other tech gear on him, he is the brains after all.
Raphael looks pure beast mode! His mask looks more like a traditional bandana and since he is the most headstrong and arrogant of the Turtles, I'm not surprised to see him with the least amount of armor.
Hard to see Mikey. Looks like he's probably going to be portrayed as hip and naive. Looks like he has a jacket wrapped around his waist, 80's style.
I don't know about you all. But I dig them! Modernized, with a nod to the sewer roots (hence the "junk armor), and the faces look Turtle enough while also being able to convey emotion. I'm impressed! Makes me a little bit more excited.
Shredder is the only one I'm "Eh" about. He looks like spikes and armor overkill! I guess we'll see how he uses it all in the movie but I guess if you want to be a ninja that can drill through anything, that's the way to go! The demon-esque mask does look awesome though!