What do the rumors say is changing from the Z Fold 2 to the Z Fold 3?

EDIT: Today is the day of Samsung’s Galaxy Unpacked event, where we expect the Galaxy Z Fold 3 to be announced. Here’s how to watch the event, and what to expect.

The Samsung Galaxy Z Fold 3 is launching in a matter of hours (see our Galaxy Unpacked liveblog for the latest), but how will it have improved compared to last year’s model, the Samsung Galaxy Z Fold 2? Even without all the specs leaked yet, the two foldables make for an interesting comparison.
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