The Solo trailer establishes that Woody Harrelson's Beckett is putting a team together, but it doesn't make any suggestion of what exactly the new gang will be doing - or who they'll be taking on. Indeed, aside from the presence of the Empire, who Han appears to be a defector from (just like in the Expanded Universe) and are seen chasing down the Falcon, there's not really much in the way of an antagonistic threat.
We do see a masked character revealed by LEGO sets to be called Moloch, who Han is locked in a western-style standoff with midway through the trailer, but the location (and toy information) appears to suggest an early confrontation rather than the movie's big bad. Another, similarly-masked character (but of a slightly different design) was seen in the TV spot fighting atop what appears to be a Kessel train, suggesting this gang is a recurring threat, but nowhere near enough focus is spent on them to draw any conclusions.
Of course, because we actually know very little about the villain aspect, it's possible the absence of a focused threat is hiding another twist; perhaps that one of the main characters we're just getting acquainted with - the biggest impact would come from either Beckett or Qi'ra - will wind up being the proper big bad. If that's the case, though, expect that twist to be kept secret until the movie releases proper.
Any Of The Rumored Star Wars Fan Bait
Since the early days of Solo, it's been rumored or otherwise speculated that this prequel will feature all manner of Star Wars fan bait. In practice, the trailer gave us only core aspects - Han, Chewie, Lando and the Falcon, along with some background Empire threat - but in the years leading up to it there's been suggestions of a Boba Fett subplot, Jabba the Hutt as an antagonist, Quinlan Vos as a Jedi companion, a younger Maz Kanata and even a cameo from Darth Vader.
Of course, it's long been debatable whether or not any of this would wind up actually in Solo; it's risky giving Han and Boba too much interpersonal history, Alden's version of the proto-smuggler is surely too young to be already getting in trouble with the Tatooine Hutt gangster (that can be saved for a sequel), and the other rumors feel based more on Legends precedent than anything serious. But, if they - or other aspects of Star Wars lore - are in the film, then they've been very carefully hidden.
- Solo: A Star Wars Story (2018) release date: May 25, 2018
- Star Wars 9 / Star Wars: Episode IX (2019) release date: Dec 20, 2019