They might not. While LEDs are now approved as headlights, things like lumens out, beam pattern, beam intensity, etc. remain unaffected by the change in light source. Those required design elements will probably cause headlights to remain as two pods, even if LEDs are used.
Personally, I would not want to see dramatic changes to headlights, mainly because of the recognition factor from other drivers. We recognize a car coming the other way by its headlights and react in a programmed manner, but if, for example, the “headlights” were a string of LEDs across the front of the car, I think it would confuse a lot of drivers, especially older drivers.