Probably some life on that planet? It's a gas giant- no life at all!
They haven't actually FOUND an Earth-like planet. They haven't found any other planets there at all other than a huge ball of gas. They just theorise that MIGHT be the kind of place that MIGHT have a set of planets SIMILAR to our own, based on having discovered one single planet that has an orbit remotely like Jupiter's.
It is interesting enough but the importance of it has been exaggerated; I read a report exactly the same as this in June last year but for a different solar system. In fact, they find this sort of thing rather a lot, here is a similar report from last September:
http://planetquest.jpl.nasa.gov/news/tau1_gruis.html
It'll be a long, LONG time before we find a planet remotely like Earth because we lack the means to detect one.
Rex, if you want details on this kind of thing, try these: