Avengers: Infinity War - How ALL 18 MCU Movies So Far Tie In
17. The Incredible Hulk
Mentions Of Infinity Stones?
None, neither inferred or otherwise. Unless there's a massive retcon coming that explains that Bruce's genetic predisposition to his mutation was caused by interaction with an Infinity Stone or something. But don't expect that.
Relevant Story Details
Bruce Banner's anxiety over potentially losing control and the Hulk taking over - which will once more form a major part of the Infinity War story as it did Thor: Ragnarok - was seeded heavily way back in his first MCU appearance. The very idea of the Abomination is of an evil Hulk without Banner's control - he's a morality tale of what Bruce thinks he would become if he let go. And he'll still be haunting him in Infinity War.
And of course, with the Sokovian Accords still supposedly a thing and the government no doubt furious that the underground Avengers escaped, Thunderbolt Ross should reappear at least briefly.
There was a hint that we might see the return of Betty Ross, but that seems a little more unlikely for now.