New rumors emerge regarding Thor: Ragnarok suggesting the movie will feature a version of Planet Hulk.
In the Marvel Comics, the Planet Hulk storyline saw Banner and the Hulk tricked into space where the Marvel heroes attempted to isolate Hulk on an uninhabited planet; however, the spaceship Hulk was on ended up going through a worm hole landing on the Planet Sakaar where the Hulk was forced to fight in gladiator style combat.
According to JoBlo, Thor: Ragnarok will not be a straight-up adaptation of Planet Hulk, but will have elements from it. It's said the Hulk will be decked out in the Planet Hulk gladiator armor, and also that it appears Jeff Goldblum's Grandmaster will be involved in the gladiator games (sounds a bit similar to Contest Of Champions/Secret Wars). We can specualte that the Grandmaster is responsible for hand-picking Thor and Hulk for his gladiator games, which explains how the Hulk gets from Earth to space.
Thor is also said to get a new look, which will be one that sees the Odinson featuring some sort of shaved head, said to be for a portion of the film.
Tessa Thompson's Valkyrie also says to look different than the comics as the character in the movie is said to feature war paint on her face.
Regarding the plot, it's said Thor needs to find the ultimate weapon to stop Ragnarok and reset the universe.
It's also mentioned Thor: Ragnarok is going to be more of an event film with a large and popular cast (ala Civil War), than anything like a Thor-only movie.
"Thor: Ragnarok" has a November 3, 2017 release starring Chris Hemsworth, Tom Hiddleston as Loki, Mark Ruffalo as the Hulk, Cate Blanchett as Hela, Idris Elba as Heimdall, Anthony Hopkins as Odin, Jeff Goldblum as Grandmaster, Karl Ruban as Skurge, and Tessa Thompson as Valkyrie.