It's possible you're thinking of a different film, or perhaps a project that has been announced but hasn't yet gone into production.
To help me find the correct information, could you provide any additional details about the film? For example:
* Do you remember the title or the director?
* Do you remember any other actors besides Johnny Depp?
* Do you remember anything about the plot?
With more information, I can help you find the movie you're looking for!