It has been just a few days since we officially learned that some major issues were happening within the production of Spider-Man 4 (which they’re apparently presenting as SPIDER-M4N; this needs to be stopped immediately), and that the movie would be on hold indefinitely until script and character differences were fixed.

Well, it didn’t take long for other gigantic Summer 2011 titles to swarm the vacated premium real estate: Box Office Mojo has made the changes that reveal that the other Marvel powerhouse in Kenneth Branagh‘s Thor has moved up from May 20, 2011 to Spidey 4‘s empty May 6, 2011 spot. At the very same time, the fourth film in another gold mine franchise, Pirates of the Caribbean: On Stranger Tides, swooped into the now-open May 20 spot left by Thor. At the the time of the latter move, Pirates 4 had yet to settle into a specific date, having only declared a Summer 2011 release.

The move for Thor is not a huge one, but this will likely make it the first biggie of the Summer season, and if a leaked X-Men Origins: Wolverine can make $85 Million as an opener, then Thor should set the bar in hard to reach places. Along with with the addition of Pirates of the Caribbean 4, May just may just already be the biggest month of 2011.

The best news in all of this has to be the Pirates of the Caribbean: On Stranger Tides date setting. Yes, Disney had officially announced the film, but when Dick Cook’s shocking firing back in September occurred (Read: Unexpected Cherry On Top: Disney Chairman Dick Cook Fired? “˜Pirates 4″² Doomed?!), many wondered if the franchise was doomed and if mega-star (and friend of Cook) Johnny Depp would return. Disney has claimed that they are making not one but three new Pirates films, and that if it came down to it, they would replace Depp. Even so, I have to believe that this is a good sign that they’ll have Captain Jack for at least this one more time.

[Source: via /Film]