SpaceX plans to launch 21 Starlink satellites into Generation 2 Group 7 on 2023-09-25 at 08:48 UTC with four additional launch opportunities between 09:03 and 11:04 UTC (How do they do this?) and six additional backup opportunities between 06:59 and 10:42 UTC on 2023-09-26. The launch will be from Space Launch Complex 4 East at Vandenberg Space Force Base in California. The first stage booster, B1075, will be making its sixth flight, after a turnaround time of 48 days since its last mission.
Here is a pre-flight preview from Everyday Astronaut.