To get to the new planet discovered in 2010 it would take HUNDREDS of years. That means that no living person today will likely visit the planet, although scientists may try to study it and find out more about its environment. We may even send a message to them, to see if we can get a response. Any response would surely indicate that intelligent lifeforms were there.
This is a breakthrough, and an amazing discovery. Although the planet is 20 light years from earth, that's relatively close in space terms. There's an endless supply of solar systems, planets, and stars we have yet to discover. When a new planet such as Gliese 581g is found it's always a welcomed thing.
For more on the new planet discovered 2010 Gliese 581G like earth, click here.