Y Combinator (YC), a prominent startup accelerator, has recently inaugurated its new 60,000-square-foot campus in the heart of San Francisco, marking a significant expansion and enhancement of its operations. This move, highlighted during the W24 batch and in collaboration with Jared Friedman, coincides with tech firm Rippling's announcement of a new 123,000-square-foot lease for its San Francisco headquarters, aiming to quadruple its office space and hire hundreds of new local workers. The developments have been met with enthusiasm from the local tech community, including San Francisco Mayor London Breed, who expressed excitement over Rippling's decision to expand in downtown SF. The new YC campus has been described as a hub for startup activity, with attendees of various YC events praising the vibrant atmosphere and the opportunity to connect with investors and other founders in person.