(Fyi) ..
I've summarised some of the detailed snippets from the press conference in Science Forum post
here.
The press conference video is
here.
They've isolated the impactor site - 150 m across with a central mound;
- lots of erosion/sublimation observed from images;
- spacecraft took about 12 hits of about 1mm sized impacts as well as another 5,000 hits of smaller size;
- impact zone concluded to have been 'weak, fragile and self-healing';
- 27:07 minute mark shows the comparison image between the initial impact and the recent 2011 image. (They haven't published it on the web, just yet);
- smooth surface flows observed, caused by volatile sub-surface gas eruptions with surface material flowing downhill (due to comet's own gravity);
- the original ejecta material "was all ice" - Schultz (at the 29:00 min mark).
Cheers