The Kepler Space Mission was named after Johannes Kepler. Johannes Kepler was an astronomy. The Kepler Space Mission is a mission to search for a habitable earth like orbiting star.

a nasa mission to find earth like planets

There are lots of planets in the Kepler series. To answer your question, we need to know to which number Kepler you are asking about.

Ceres and Eris are not planets; they are classified as dwarf planets.

Eris was discovered in our solar system recently and not by the Kepler mission.

Ceres is not "new" either; it was discovered the first day of the 19th. Century.

I didn't check the specific "Kepler-" codes, but that looks like planets discovered by the Kepler mission to be orbiting around other stars.

One benefit to me about the Kepler mission, is that we won't always have to wonder if there is any other life on any other planet? I think that is something that we have at least wondered once if there is life on other planets. SO I think with this mission we will finally have proof of if there is life on other planets.