Yes, fans will be getting a new version of the giant telepathic gorilla that has been menacing Team Flash in Central City off-and-on since the very first season of The Flash.
Grodd was last seen in the second half of a gorilla-filled two-parter of The Flash Season 2.
Foiled again by the efforts of Team Flash, he was locked up by A.R.G.U.S. Legends of Tomorrow will presumably encounter him after he breaks out of A.R.G.U.S. or run into him in a distant future.
Phil Klemmer went on to reveal to IGN that this new version of Grodd will be from a point in the timeline after he left Gorilla City on Earth-2.