As for toy images looks like the first stuff is starting to leak. It would seem theyare going for a ultimate Thor style replacement for the Hammer.
As we know, Thor is going to have a new weapon in Avengers: Infinity War – and we've finally got a look at it...
Yep, it's Groot!
Nah, we're joking. Thor isn't using Groot as his latest weapon, though Groot does have a role to play in it all. (More on that later.)
In a new photo posted on Reddit by BruceBannerfanboy, the toy version of Thor reveals the God of Thunder holding his new weapon thanks to the image on the front of the packaging.
And by the looks of it, it's actually a sort of half-hammer, half-axe (aka Ultimate Mjolnir), since Thor is in need of a new weapon after the loss of his beloved Mjolnir in Thor: Ragnarok.
As we mentioned above, Groot is likely involved in Thor's new weapon – in one way or another.
In the first trailer for Infinity War, Thor was shown waking up on the Guardians of the Galaxy's ship, so it's likely they help him in his search for a weapon.
It's also possible that Groot gives Thor a piece of his body. If he does, Groot's superhuman durability and plasticity will surely make Ultimate Mjolnir pretty robust.
Meanwhile, Chris Hemsworth's Marvel contract is sadly finished after Avengers 4 and it looks like the star could really be putting the hammer down as Thor.
Credit to Digital Spy for the article. http://www.digitalspy.com/movies/the-avengers/news/a849777/avengers-infinity-war-thor-toy-new-weapon-hammer-ultimate-mjolnir-groot/