Simple question, I am wondering if there is still an off day between the F4 and the National Championship game? I know the update changed certain things with the schedule, so I'm just wondering about this.

For example, Tark F4 will sim Tues morning at 2:00 AM (EST). Am I correct in saying that the championship game will sim Weds morning at 2:00 AM?

Yes there is still the off day. If you haven't seen the new World Schedule feature it has it there as well as when recruiting starts and ends, when signings start, etc. It seems to be a pretty nice new feature.