K-1's recent purchase was bound to lead to more announcements and speculation, and outside of the rumor of the K-1 World Grand Prix Final 16 in October, there has actually been another show scheduled for September, which is looking to be the K-1 World MAX Japan tournament finals for the 70kg weight class. This is the tournament that would usually happen around February, but due to K-1's problemed year, this tournament will be happening in September instead. We've already seen a few fights in this "tournament" and are set to see the rest of the tournament unfold on the 25th of September.
It will happen in Osaka, Japan on September 25 with a host of participants planned for the show; Albert Kraus, Yuya Yamamot, Yuichiro "Jienotsu" Nagashima, Yasuhiro Kido, Yuta Kubo, Kizaemon Saiga, Yuji Nashiro, KENTA, Takafumi Morita, YOSHI and Takeshi Yokoyama. As you can tell, a mix of -63kg fighters and 70kg fighters, so it won't strictly be the 70kg tournament, much like there were MAX/70kg fights at the -63kg tournament.
It should also be noted that if K-1 wanted to hold a World MAX tournament around that time it would be impossible for them, as It's Showtime is promoting their Fast and Furious 70kg MAX tournament on September 24th. It will be two incredible days for kickboxing for sure. [source]