Japanese blog Macotakara stated that Apple plans to release the second-generation AirPods Pro and the third-generation iPhone SE in April 2021, and the information comes from the Chinese supply chain again.
The new AirPods Pro 2 will be equipped with a slightly redesigned charging case. Specifically, the shell thickness is still 21mm, but the height will be 46mm and the width will be 54mm. The current AirPods Pro charging box has a height of 45.2mm and a width of 60.6mm, so the new charging box will obviously be slightly narrower.
The report did not provide more details about AirPods Pro 2 or iPhone SE 3.