Not saying that WDWNT is right about the whole possible SDCC announcement (I was as skeptical as anyone), but some things do line up. Joe Rohde is attending SDCC and is already there. Joe was put in charge of Marvel projects for Disney Parks last year. Martin seems to think there's a chance for an announcement as well.
Maybe it would just be DCA since that's supposed to go down in September and open in May with the movie, but it'd be odd to make one announcement and not the other. Then again, it could just be the more likely option and nothing happens. It is certainly interesting that Rohde at the convention, given his role though.