The report mentions that "Kevin Feige just doesn't have anything new to show," which is a rather odd statement as Marvel has Ant-Man opening the following week in addition to Marvel filming Captain America: Civil War and plans for Doctor Strange to be released in 2016, with filming to begin later this year.
There is also the fact that Marvel could have revealed their new Spider-Man at Comic-Con.
More than likely, Disney is holding back Marvel Studios from Comic-Con for either their own event, similar to the Avengers: Infinity War announcement with Black Panther at El Capitan theater from last year, or the Disney D23 Expo a month after Comic-Con in August.
It is noted that Marvel Studios' absence will leave Warner Bros. with, potentially, a significant presence of its own as Batman Vs. Superman, Suicide Squad, Wonder Woman and Justice League Part 1 are lined up. It's possible Will Smith, Ben Affleck, Henry Cavill, Gal Gadot, Margot Robbie, Jared Leto and others may be at Comic-Con representing the DC movies.
For Marvel fans, while Marvel Studios will not be at the SDCC, Marvel Comics will be there with a booth and panels of their own.
Comic-Con takes place July 9-12 in San Diego.