User blog comment:UltraMegaDude/Will Metriacanthosaurus be in Jurassic World: Fallen Kingdom?/@comment-34865525-20171228180204

A site runner for the Outpost who got a look at the toys at some point in June said on the JP subreddit that the Metriacanthosaurus is based off of concept art for Fallen Kingdom that was made before it was scrapped from the film.

With this in mind, no, it probably isn't going to be in the movie, like Spinosaurus and Ceratosaurus weren't in Jurassic World despite their presence in Hasbro's toy line.