That's the same aspect ratio used by Apple in the iPad mini, which has an 8.3" screen. The Pocket 3's display will be 6.3", so, when it's unfolded, it should pretty much look like a smaller iPad mini.

Apple’s 11th generation iPad, set for release in 2025, represents a significant evolution in the entry-level tablet market. While retaining the sleek design introduced with the 10th generation ...