This launch was SpaceX's 25th of the year, and ninth for the rocket's first stage. The mission was supposed to be launched earlier, but the launch was postponed due to bad weather conditions.
The previous launch for the global satellite constellation was on September 14. Before that, all spacecraft were launched into orbits with an inclination of 60 degrees or into polar orbits. According to SpaceX's plans, the number of satellites in the orbital constellation may be increased to 42,000.