USA Network has released their March TV line-up and it appears that WWE's Hall of Fame ceremony will not air on Saturday, March 31st, the night before WrestleMania. Currently, they have a movie listed for the Saturday night timeslot. Last year, USA aired the one-hour Hall of Fame special to after WrestleMania. Of course, this could easily change.
There are also no three hour RAWs scheduled for March for the WrestleMania 28 build-up.