I read it somewhere, looking for the source now. But anyway, they did it for the static fire the previous week, so guessing they'll use the same setup for the launch.
You can find the presskit here
. Bottom of the first post.
ETA: Which now that I re-read it on page 3 says the launch will be webcast live. Doesn't say it will be in HD, but since the static fire was, we can assume it will be.