The Philae lander will separate from the Rosetta spacecraft tomorrow morning at just after 2 AM mountain time.
Philae will land on the comet at just after 9 AM mountain time.
Here is the Live Update page for the Rosetta mission:
http://www.esa.int/Our_Activities/Op..._comet_landing
Here are some awesome pictures:
Philae (click to massively embiggen)
Closeup image of comet's surface