The Jet Propulsion Laboratory has a new web page up, PlanetQuest. You can track daily updates to the current count of exoplanets, bodies discovered outside the solar system. We have yet to be able to image planets directly, but this site also provides some helpful depictions and animations of our best guesses of what these new planets might look like.
In the artist’s rendition above, the Spitzer telescope has uncovered a gap in the dust cloud surrounding UX Tau A. Best explanation: planets clearing out lanes in the debris.