Set for release on December 15, 2028, Black Panther 3 will introduce David Jonsson as a new T'Challa, the son of the previous Black Panther portrayed by the late Chadwick Boseman.
The release of Ghost Rider is also planned for 2028, though no date has been specified.
The panel also featured first-look footage from the franchise's next major project after Spider-Man: Brand New Day, which arrives in theatres on Friday, Avengers: Doomsday.
"Is this really happening?" Gosling asked as he surprised fans by emerging onstage for Ghost Rider on Saturday.
"If we're going to do this, there's only one director," he said.
Shawn Levy, who directed Deadpool and Wolverine, then joined him on stage.
"We'll see you in 2028," Levy said.
Later, Ryan Coogler and some of the cast of Black Panther 3 took to the stage, including returning stars Letitia Wright and Winston Duke.
"I want the screen to do the talking. But believe me, the honour is entirely mine," Jonsson said of taking on the title role.
Audiences also got a glimpse of footage in which the villain Doctor Doom overpowers the Avengers in battle. The teaser also revealed that Doom commands an army of Sentinels, the giant mutant-hunting robots familiar from Marvel's X-Men comic books.
Marvel movies have generated nearly $US33 billion ($A47 billion) at global box offices, the highest total for any film franchise.
Avengers: Endgame, released in 2019, is the second-highest-grossing movie of all time.
Avengers: Doomsday will be released on December 18, the same day as the third installment of Warner Bros sci-fi series Dune, setting up a box office battle dubbed Dunesday.
