Well, in an odd bit of coincidence, (and to create a crossover with my Smash Bros. thread thereby creating the Khushrenada/Linkle Link shared and united thread/topic universe) there was a posting on 4Chan claiming that there are 11 characters that will be unveiled and added to Smash Ultimate still to be shown. They've all got codenames however so it could be anything and nothing. But one of the codenames is Prime Ribs. What does that have to do with Nintendo franchise or characters or even other third party series? No one knows but the guesses are focused on a Metroid Prime character as some likely meaning if even real. However, with the continued focus of BBQ on Retro's twitter account, perhaps it has something to do with the mysterious game they may or may not actually be working on. Although, it seems to be a stretch that this meat and character are related since those are more likely spare ribs or pork ribs and not prime ribs in the Retro Twitter gif.
So, what I'm saying is.... I got nothing.