I hope this is not an "April, April" Scherz as my Friends might say.
Here is the link - more later
Here is ESA's link
It appears that Philae has been working independently for awhile but has not been heard. It will take awhile to get this data, in part because the comet is now much more active than it was in Nov and so presents a risk to Rosetta when it moves in closer to receive the data.
This BBC Link has a video interview with Mark McCaughrean discussing possibilities.
And here is a link to the PR Landing of Nov 12, 2014 1min 52 Sec