Don't Wait for a Foldable iPhone
Apple might be working on a foldable version of the iPhone, but there's no guarantee it releases one in 2020.
Apple rivals like Samsung and Huawei have confirmed foldable devices. Samsung is planning to re-launch the Galaxy Fold while Huawei's Mate X arrives sometime later in the year.
A 2019 foldable iPhone is almost certainly out and there's a good chance Apple waits until 2021, or later, to deliver its own version.
We've seen some patents hint at a foldable iPhone but this doesn't confirm anything. One analyst believes Apple will roll out a foldable iPhone in 2020 but we haven't seen any other credible sources point to a release next year.
Until that happens, you should operate on the assumption that a foldable iPhone is coming in 2021 or later, if it arrives at all.