This topic from Long and Short Reviews was a straightforward one. I've been re-watching all the MCU films as well as the TV series that have recently been showing, such as WandaVision and Hawkeye, so I know exactly which one I can't wait for.
Doctor Strange and the Multiverse of Madness.
I'm not sure it's going to go in the direction I wanted - Wanda is one of my favourite characters, and it looks like she's going to be the Big Bad in this film - but I love Elizabeth Olsen and Benedict Cumberbatch, so it's still going to be worth seeing.
So what can't you wait for?