The planet is very interesting, and probably gives us a good look on how life on Earth will be in the future. Assuming it is indeed a terrestrial planet and not a gas one. We're about 49-62% sure it's a rocky Earth like planet though. Which if it is, there's a pretty good chance it has a solid atmosphere and perhaps even active volcanoes. The planet itself is a little older, about 6±2 Gyr, (billion years), similar to the estimated age of its parent star. We expect it to remain in the habitable zone for another 3 Gyr.
Due to the star being older and slightly bigger, the energy being put out by it is quite a bit different, about 10% more to be exact, as the star is nearing the end of its time on the main sequence. That significantly lowers the chance of habitability of the planet, because it could mean runaway greenhouse gasses, similar to what has happened to Venus. If that's the case then we wouldn't really be able to live on there if we could travel there. The strength of the gravity (about twice as much as Earth) would allow the planet to hold onto water longer though. If the runaway greenhouse gasses were starting, we likely wouldn't see oceans, but rather pockets water that are highly concentrated in minerals, before they eventually completely evaporate.
However what is more interesting to us is that this planet could give us a look into how conditions of Earth will change as our sun ages. We know that the energy output of the sun will change, exactly what that does to us we aren't sure. If we did find out there was life or anything like that, it would be a happy coincidence.
If there was life they would potentially be a billion years more advanced than us (somewhat scary thought), and they should know our planet is here. Assuming of course they advanced past the great filter (if we're to follow the Fermi paradox) in the first place.
Kepler 452b is an interesting planet to observe though, while it's probably not going to result in us confirming life (although that would be very cool) it's the closest planet to Earth we have found. With the new James Webb telescope being set to launch late 2018, we'll be able to get much more data on these planets though. The good news is also that we're starting to find more of the smaller planets, instead of the larger gas planets, as our understanding and technology improves. Obviously the smaller the planet the harder to find.
