I can see that the lack of news really is getting to some...don't worry, I have a bit of a theory.
Many were upset that Ridley wasn't talked about during E3 right? Well in a way, it kind of made sense. The newcomers shown off at the digital direct were directly related to that of the custom movesets and their potential in Smash Bros as it was the big thing Sakurai talked about during said event, hence why Pac-Man was revealed later on and not at the direct, in a way it made sense.
However, Sakurai has not gone into deep detail on the Boss hazards of Smash Bros 4, which I feel will be next month as it's the only opportunity to do so. However, to start the direct, we of course get a confirmation of a character directly correlated to said part of the game...Ridley! Ridley will be shown to be the only character who's both a playable character and boss hazard, along with a full list of boss hazards for Smash Bros 4, who could basically be anyone really. Ganondorf can be announced alongside Ridley to solidify his spot as a hardened boss character in Nintendo History much like Ridley.