Yes, they knew it landed, they got data back and then other than the last burst, never heard from it again. That's from the article and other news sources.
Nice to know that it was still there after the last burst, that it hadn't been swept into space. And from the pictures it's going to be on there for awhile.
Then RYFC: "it's good to know that Philae hadn't bounced off into space." does not correlate with someone who had bother to read the article before commenting. You can't "bounce" from a stationary position, but glad to see you've now caught up.