What does notification date mean (CS conference)?
Yes, exactly.
No, as this would reveal the reviewers' identifies. Normally, you will receive the reviews with the notification or shortly afterwards from the program committee chairs.
Most conferences do not actually have proper revision cycles. Either your paper is accepted or not. If it is accepted, then you get the chance to take the reviewer comments into account by submitting a new final version. There is no formal review of the final version of the paper.


There are conferences that have some minor deviations from the plain process:


Some conferences have a rebuttal period in which the authors can see the reviews and respond. This gives the authors the chance to answer to questions or point out errors in reviews. This will be taken into account for the acceptance/rejectance discussions.
Some conferences have a shepharding process, in which promising by not yet good-enough papers get a second chance to be brought into acceptable shape, with the shorter second reviewing round.
Some conferences have a two stage process, where after the first stage, papers are only conditionally accepted, and the authors need to make a second revision, which is also subject to review.