This is apparently a very big deal, so I'm sharing the news for people who follow these things. Via the Washington Post:

PALMDALE, Calif. — The Pentagon and defense contractor Northrop Grumman unveiled the U.S. military’s bomber of the future on Friday, showcasing an aircraft cloaked in secrecy for years and set to serve as a backbone of Air Force combat operations for decades to come.

The B-21 Raider, with a distinctive batwing shape, was pulled forward out of a hangar here while awash in blue light as cinematic music played and Northrop Grumman employees cheered. The ceremony was held at the company’s facility at Air Force Plant 42, a heavily guarded, government-owned manufacturing facility north of Los Angeles, where some of the military’s most highly classified work occurs.

Defense Secretary Lloyd Austin, speaking in front of the hangar, said that the plane is proof of the Defense Department’s long-term commitment to building advanced capabilities that “will fortify America’s ability to deter aggression, today and into the future.” The stealthy plane, he said, has “50 years of advances in low-observable technology” built in, making it difficult for “even the most sophisticated air-defense systems” to detect a B-21 in the sky.