BUT...... what if it does happen tho........
Unless the studio goes against Edwards, it won't, he's spoken out against stuff like that, he believes in everything the audience needs to see being contained within the runtime of the film, he doesn't like post credit scenes or even something like Avengers with a quick run of the main cast and then a hidden scene. Sure with the internet you can find out about these scenes, but it is annoying to have to see if there's a hidden scene cuz sometimes they actually feature relevant info for sequels and aren't just something fun.