No doubt, the Fold 3 is a unique and interesting device, but I'm more pumped for the Surface Duo 2.
One of the big drawbacks to mobile is the single screen/single task limitations.
While having a bigger screen makes for a better user experience, I think having two separate screens offers an interesting user experience.
I used the Duo 1 for a few days. While I'd have to agree with most reviewers that it needs some serious hardware and software refinement, it was still a really fun and intriguing device. Being able to hold a WhatsApp conversation while scrolling the Internet, watching a video or chatting on teams, without having to move between apps, is a game changer.