I didn’t think I would live to see the day, but they did it. Obviously I have underestimated way too much the capabilities of our current technology ^_^ . The planets did have the benefit of being far away from their parents star, and they are huge, but still, it is quiet the accomplishment. I also found a science paper (which I found thanks to this) about the spectroscopy of the planets, if you want to read it (beware, not for your average joe). Yeah, not much to say about this one, the links will tell you everything.
Atmospheric Composition of Extrasolar Planets Detected