Amazon has put up a listing for the first volume of the JoJo’s Bizarre Adventure: Part 4 Diamond Is Unbreakable manga, revealing a release date. According to the product page, Vol. 1 will be coming out on the 7th of May in the North American region. If you are interested, you can preorder JoJo’s Bizarre Adventure: Part 4 Diamond Is Unbreakable Vol. 1 with this link from the online retailer; furthermore, you can also check out the front cover with the image located just below this paragraph.
You can also find Amaozn’s product description for Vol. 1 below:
A multigenerational tale of the heroic Joestar family and their never-ending battle against evil!
The legendary Shonen Jump series is now available in deluxe hardcover editions featuring color pages! JoJo’s Bizarre Adventure is a groundbreaking manga famous for its outlandish characters, wild humor and frenetic battles.
In April 1999, Jotaro Kujo travels to a town in Japan called Morioh to find a young man named Josuke Higashikata, the secret love child of his grandfather, Joseph Joestar. Upon finding him, Jotaro is surprised to learn that Josuke also possesses a Stand. After their strange meeting, the pair team up to investigate the town’s proliferation of unusual Stands!