An interview with director Marc Webb at Comic-Con divulged that the composer for the completed film will be none other than Hans. This would make it the 2nd time that he has replaced Danny Elfman on a superhero score after Batman. In this instance though, James Horner will not be continuing after scoring the first reboot.
As the movie is already in post-production, this would be a case of the score being an obvious afterthought, and a question of what music is already in it being used for promotional use.
This makes the 3rd superhero Hans has taken on after Batman and Superman respectively.
IMDB now has Hans listed as composer for the movie.