It might be accurate.
Last year, Microsoft stated that Gears 5 would launch sometime in 2019. Even though half of the year is already over, we still don't have a release window or a concrete release date. While the company may be waiting for E3 2019, it looks like the Taiwanese games rating agency had other plans. According to a listing on the body's website, Gears 5 should launch on September 10. This information was uncovered by Generación Xbox before the agency removed the release date.
Full story from the WindowsCentral blog...