An additional 60 Starlink satellites are scheduled to launch on January 6, a few days later than planned (original date of December 30).

These 60 will join the 130 or so already in orbit and will be another link in Elon Musk's plan to cover the planet with broadband internet. The statement "or so" is explained by the fact that 9 of the previously launched satellites (version 0.9 for test units), are reportedly lowering their orbits to re-enter Earth's atmosphere and burn up within the next few months.
This third batch will mean that Starlink will have about 150-170 fully operational satellites in orbit. Musk wants a total of 1500 in his first-stage mega-constellation scheme.

SpaceX is planning two more Starlink launches this month - weather permitting - and up to 38 launches this year, and is thus preparing to introduce services later this year.