From Elon's talk, I doubt there would be suicide doors. He said he would avoid being too adventurous on the first go in order to get the car out on time. They don't have the time to experiment like with the Model X. There will likely be massive cash burn as they prepare for launching the Model 3, so they can't really afford to do so.
There are numerous safety disadvantages to suicide doors (thus their name) and when getting out on the same side from front and rear, it is possible to get stuck if there is a car next to you. With a conventional door, if you open both front and rear doors at same time, the person in the rear can leave the car first. With suicide doors, both people would be stuck if you open both at the same time.