Amazon has put up a listing for the 28th volume of the Attack on Titan manga, revealing a release date. According to the product page, the latest chapter in the ongoing series is coming out on Aug. 13, 2019, in the U.S. region. If you are interested, you can pre-order Vol. 28 with this link from the online retailer; furthermore, you can also check out what the front cover looks like with the image placed just below this paragraph.
Last but not least, you can also take a look at Amazon’s product description for Attack on Titan 28 Manga Vol. 28 below:
The blockbuster manga that inspired the epic anime, airing now on Adult Swim’s Toonami!
After years as a lonely double agent, Zeke finally returns to the good graces of his home island of Paradis. Still, the Survey Corps refuses to let him meet Eren–the other ingredient in the earth-shaking weapon– for fear the explosive duo will be impossible to control. Meanwhile, the public responds badly to the military’s open distrust of their hero Eren, and the detention of the Marleyan volunteers spurs an uprising. Amid the turmoil, Eren takes matters into his own hands…