He is going to have two weekly serialization works for a while
Manga artist Hiro Mashima announced on his official Twitter account on September 11 that he will launch a new weekly serialization manga series titled HEROES in Weekly Shonen Magazine in October and that his ongoing EDENS ZERO will not go on hiatus. It means that he is going to have two serialization works in the weekly magazine from October for a while.
"I was told, 'Please do something for Magazine's 60th anniversary, Mashima-san.' So I will launch another new serialization from October. I will work on one more weekly serialization work simultaneously with EDENS ZERO. It is going to be a short series, but two weekly serializations! I will do my best!"
マガジン創刊60周年という事で、真島さんもなんかやってくださいよー。と言われたので、10月からもう一本「新連載」を始めます。エデンズゼロ と並行して週刊連載をもう一本やる事になりました。短期連載になりますが週刊2本！頑張ります！— 真島ヒロ (@hiro_mashima) September 11, 2019
According to his following tweet, HEROES will unite the worlds of RAVE, FAIRY TAIL, and EDENS ZERO as one, so it is expected to be an all-star crossover series.
週刊少年マガジン60周年企画。真島ヒロ新連載「HEROS」10月スタート予定！— 真島ヒロ (@hiro_mashima) September 11, 2019
RAVEとFAIRY TAILとEDENS ZEROの世界が一つに！？お楽しみに！
Source: Hiro Mashima official Twitter