Although there are variants, the posters were primarily the same around the world.
Exact same art; different slogans.
To promote the blu-ray release, a series of E-Cards was released online. Again, the same artwork was employed as on the poster artwork, but this time they featured holiday-themed taglines.
In addition to the trailers, the cast appeared at Comic Con, there was a huge press junket where press members were allowed to come in and ask rapid-fire questions to each cast member for 5 minutes. A vast array of interviews are available on You Tube.
Cast and crew members appeared in a panel discussion at Comic Con to promote the film.
The pair of videos above are a truncated version of the post-screening interview with Yelchin, Plasse and Franco.
A longer, more casual conversation at the Alamo Drafthouse with the actors, who were given alcohol at the start of the proceedings.