Read the article from Space.com, or NASA press release

It`s not the first time news-media has brought this issue up, but this time it`s special: the new-found object is bigger than Pluto.

If this object don`t earn planet status then Pluto might loose it`s definition as planet.

And just before this announcement, another Pluto-sized object was said to be found:Large New World Discovered Beyond Neptune