'Big Heroes 7' premiere date moved to 2019?

Disney's hit animated feature film in 2014, "Big Heroes 6," has captured a lot of hearts all over the world upon its release. The re-imagining of the Japanese story from Marvel Comics to the American audience has proven to be a huge success, both commercially and critically. This is why the news that "Big Heroes 6" will be getting a sequel is no longer a huge surprise as this will be a way to bask in the success of the franchise, as well as to sustain the interest of the fans for a longer period. Initially titled as "Big Heroes 7," the fans are expecting the sequel to hit the theaters in 2017. However, the latest reports suggest that the premiere will be moved to 2019.
Hall of Fame Magazine reported the comic book icon and former president and chairman of Marvel Comics, Stan Lee, stating that the "Big Heroes 6" sequel will be out after "Guardians of the Galaxy" Volume 2 is released. Marvel Studios has already released the release dates of all the movies that are part of the Marvel Cinematic Universe's (MCU) Phase 3, which includes the "GotG" sequel. It will be released in July 2017, and if Lee's statement regarding "Big Heroes 7's" development will verify, the fans can expect the animated movie sequel to come out two years after 2017. It is highly doubtful that Marvel and Disney will be able to finish "Big Heroes 7" within a short period of time after "GotG" Vol. 2, that's why 2019 may be the best bet that the movie will be released.
Lee's statement came up after his interview with Postmedia Network last year, as reported by the same publication. During the interview, he talked about the success of the previous Marvel films, as well as the upcoming ones such as "Doctor Strange" and "Avengers: Infinity War."
Meanwhile, there is a chance that "Big Heroes 7" will feature familiar faces from the Marvel Comics. According to news website Yibada, Sunfire, which is rumored to be Hiro's older brother, Tadashi, will be joining forces with Marvel's X-Men after the former's encounter with Professor Charles Xavier.