Hype for Superman is quickly building, and with very early tracking pointing to a $155 million - $175 million opening weekend, all signs point to DC Studios' first movie being a hit.

However, it won't be until tickets go on sale that we get a clearer idea of how big a hit Superman will really be. According to @BoxOfficeTheory, the current plan is for tickets to be available starting June 12. Based on past experience, that means we'll get new posters and perhaps even another trailer.

A leaked Amazon Prime listing, meanwhile, appears to have also confirmed that fan screenings will take place on July 7, four days before Superman arrives in theaters.

The benefits of these previews are widely debated; studios hold them to build excitement, but allowing thousands of fans to see a new movie for free does put a dent in those opening weekend figures. It also leads to plot spoilers and pirated footage,...