It would seem that Marvel is pushing the wheels of a Black Panther film into motion based on the comics.
1) As stated in an interview, Wakanda would be a hard place to recreate in the film world. Now that Wakanda was destroyed by the Phoenix, could Marvel be setting up for a brand new Wakanda that can be translated better into film?
2) Black Panther and Storm split. Could this be so that he has a new love interest in the film world? And when the Black Panther hype comes from a possible movie, new readers won't be confused as to why he is dating Storm instead of whoever his movie love interest is?
3) Marvel has really given his character a boost to make him one of their best characters. This could also contribute to idea of a black panther film.