It has been reported through the Wrap that the upcoming Man of Steel Sequel, Batman Vs Superman, is going to be pushed back 10 months. This means the movie will now open against a Marvel movie on May 6th 2016. The reason behind the push was to allow the filmmakers more time to develop their vision of the movie. On top of that they seem to be adding more and more characters and I trust them not to make this into the Justice League movie but I hope they don't add any more characters from the JL.
I don't really like this idea, they are giving them too much time to develop this movie they already had over two years (and I am sure they were working on it before they even announced it). As much as the time might help the movie, it can also harm it a lot. On the marketing side it's where it will be the most affected, in 2015 Avengers: Age of Ultron comes out and now no DC movie to stand against the Juggernaut will lose some points of recognition, not only that but it will come out now directly against an untitled Marvel movie and if Avengers and Ant-Man do really well, chances are that this will affect greatly when it comes out. Still there are many good things about the movie, but this change of date has me a bit worried; I don't really think this is such a great idea for many different reasons. For now all we can do is wait and see, maybe we will get other news.