Mavic 3 Pro was released on 5/25/23. Mavic 4 Pro is at least one year away, based on DJI's typical release schedule.
With two cameras (1X & 3X), Mavic 3 weights at 895g. With three cameras, Mavic 3 Pro weights at 958g. Mavic 4 is most likely going to be even heavier, because DJI is approaching...