4K Release date in the U.S. for Ambulance is June 14th according to thedigitalbits. No mention of a steelbook yet.
And while we’re on the topic of 4K, we have some street date updates for you from various retail sources: 20th Century Studios will release Death on the Nile (2022) on 4/5, Paramount will release The Lost City (2022) on 8/2, Universal will release The Northman on 6/7, followed by Michael Bay’s Ambulance on 6/14, and the animated The Bad Guys on 6/21, and Warner Bros. is now expected to release Matt Reeves’s The Batman (2022) on 5/24, with Fantastic Beasts: The Secrets of Dumbledore expected to follow in late June (6/28 is the likely date). Keep in mind that many of these dates are still subject to change, as the titles in question are not all officially announced.