A couple days ago I posted:

Next problem, Starship’s new Block 3 development. SpaceX’s Flight 11 in October 2025 was the last Block 2 flight. Block 3, the redesigned configuration critical to HLS operations, will begin flight testing in 2026. It brings increased propellant capacity, an androgynous docking system, and refueling infrastructure. The booster features an integrated hot-stage truss with the methane tank serving as a primary structural element,and redesigned docking hardware and re-positioned catch pins for the new catching mechanism. These are not minor tweaks. Each introduces potential new failure modes that must be identified and resolved through flight testing.

This happened today. SpaceX rolled out the next generation of Starship to Masseys for testing, but during a routine gas system pressure test as SpaceX calls it, the Liquid Oxygen Tank ruptured. This leaves SpaceX with no Block 3 Boosters to test with after just finishing stacking Booster 18, 16 days ago.