Ford says that it’s completely coincidental, and that the release date is still set for July 9th.

https://twitter.com/Ford/status/1271880051106160642?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1271880051106160642&ref_url=https%3A%2F%2Fpeople.com%2Fhuman-interest%2Fford-is-releasing-a-new-bronco-on-o-j-simpsons-birthday-this-july%2F

Source: YouTube, People