be on the poster
The Spanish phrase 'estar en cartel' translates to 'be on the poster' in English. It refers to when somebody's name or image is featured prominently on a promotional material, often for films, plays, concerts, or other public events. In general usage, it can also metaphorically indicate when something or someone is particularly popular or newsworthy.
The movie you want to see is going to be in theaters next week.
The phrase 'estar en cartel' is used in the context of indicating that a certain movie, play, or other event will be displayed or performed in a public venue.
Your favorite band's concerts usually come up every summer.
In this example, 'estar en cartel' is used to indicate a recurring event, in this case, the band's concerts that are usually held every summer.
The museum's new exhibition is going to be on display until the end of the month.
Here, 'estar en cartel' is being used to indicate the duration of an event or display, like an exhibition at a museum.