The planet is just the right size, might have water in liquid form, and in galactic terms is relatively nearby at 120 trillion miles away. But the star it closely orbits, known as a "red dwarf," is much smaller, dimmer and cooler than our sun.
On the Net:
The European Southern Observatory: http://www.eso.org
Plus.. at over 100 trillion light-years away from us, and with our current forms of transportation and technologies, I don't see that we can reach the new planet anytime soon in a human lifetime!
I read some more fact about it like; this new planet doesn't revolve around itself and takes about 13 days to revolve around its Sun, Gliese 581. Speaking of which... this sun is a red star, and is less energetic than our sun, but it is believed that it is able to sustain some sort of energy enough for life to occur on its planets!
Scientist think it would take as much as 20 years from now to know for sure if there is life on it!
Should something happen to earth in the future, far far future, then this planet might come in handy then :-P