Per Mike Johnson of PWInsider, SmackDown will not broadcast live episodes from the West Coast when it moves to FOX. 
“It will not be,” Johnson said on PWInsider Elite Audio. “If they are going to do SmackDown Live, they would have to broadcast it at 5 p.m. from the West Coast. You figure, on a Friday, coming home from work and stuff, it would be a pain in the butt. Most people don’t get out of work until 5 o’clock.”