The official Twitter account for manga creators Eiichi Shimizu and Tomohiro Shimoguchi announced on April 12 that their Getter Robo Devolution (Getter Robo Devolution – Uchū Saigo no 3-bunkan) manga will end in two chapters. The May issue of Akita Shoten's Bessatsu Shōnen Champion magazine published the manga's 36th chapter on April 12. If the manga does not take any breaks it will end in the July issue published in June.
Shimizu and Shimoguchi launched the manga in Bessatsu Shōnen Champion in December 2015. Akita Shoten published the manga's fourth compiled book volume on October 5. The manga is based on Ken Ishikawa and Go Nagai's Getter Robo robot anime and manga franchise.
When strange alien creatures known as the Devolved begin attacking our universe through distortions in space, three young pilots are recruited to combat them. The trio are connected by Getter Rays—a mysterious cosmic radiation—and with its power are capable of piloting the most powerful robot known to mankind: Getter Robo!
Shimizu and Shimoguchi worked together on the 25-volume Linebarrels of Iron manga, which they launched in 2005 in Akita Shoten's Champion RED magazine, and ended in April 2014. The manga inspired a 24-episode anime in 2008 that Funimation released in North America in 2010.
The duo is also serializing the Ultraman manga in Hero's Inc.'s Monthly Hero's magazine. Viz Media is releasing the manga in North America. The net anime based on the manga premiered on Netflix globally on April 1.
Source: Eiichi Shimizu and Tomohiro Shimoguchi's Twitter account