I'm hoping there will be some promo merchandise for the media to give away as competition prizes.
I got an X-Men: First Class stationery set that was a spare promo prize, plus (years before) some Fantastic Four stuff (Human Torch wristwatch, Silver Surfer notebook and water bottle), and also an Avengers T-shirt and keyfob and a Conan T-shirt. Yay!
In the set visit interviews, Kinberg (I think) mentioned TV shows as an option to spin things off so they may be considering making a deal on that.
I bought an Ian McKellen / Magneto mug from a convention a few years ago, it was probably unofficial.