Philae has sent all of its data, and I'm sure it will keep the scientists busy for some time. But now the lander has gone to sleep. The battery has been drained and there isn't enough sunlight to recharge it - Rosetta and Philae are still nearly half a billion miles from the Sun. However Philae does have solar panels, so it's conceivable that there could be a revival as they move closer to the Sun.
ESA has an interactive tool
Where is Rosetta? that lets you see where Rosetta is now and at any time during her ten-year journey from Earth. If the music gets annoying, you can turn it off and play Rosetta's Waltz instead!