Batman v Superman Being Split Into Two Films?

This is to be taken as a rumor but this image has made the rounds today and is said to be from the end of the upcoming teaser trailer for Batman v Superman: Dawn Of Justice.  Only this image seems to be saying the film is being split into two parts with part 1 subtitled "Enter The Knight" being released this October, then "Dawn Of Justice" being released next March.  This is all a huge rumor and likely not true.  It just seems Warner Brothers is unlikely to do this with production on the film ongoing and still having post-production work to do.  So we say that Batman v Superman: Dawn Of Justice will be out next March as planned and as one single film.