According to analysts, Apple might launch a foldable iPad first instead of a foldable iPhone due to reduced market risk, to experiment with the technology and to handle foldable tech at scale.
Foldable ipad-macbook hybrid RSS
Besides foldable iPhones, a foldable iPad/MacBook hybrid device is something that Apple seems to be interested in bringing to the market. Bloomberg's Gurman has recently shared more details about it.