Source

B1061 was intentionally expended on the recent Hera mission.

In doing so, it broke the record for the fastest Falcon 9 second stage.

Scott Manley: https://x.com/DJSnM/status/1843317121511743973

43040km/h the fastest falcon 9

43040 km/h = 11.956 km/s.

A few words from Kiko Dontchev, SpaceX VP of launch: https://x.com/TurkeyBeaver/status/1843341972414836779

The @SpaceX is unreal. Facing only a 15% chance of good weather this morning and an incoming major hurricane, we still went for (with a plan to roll the rocket back in the hangar for safety if we didn’t launch). Good launch, good orbit, and good payload deploy. Sayonara HERA and Booster 1061!!!