https://wccftech.com/android-12-beta-references-foldable-pixel-pixel-6/

Android 12 Beta 1 is officially here for compatible Pixel models, but there are some other surprises that may be of interest to you. Thanks to some digging around, some references in the latest Beta revealed unreleased handsets from Google, and one, in particular, was the foldable Pixel. Let us check these out in more detail.

According to the valuable information 9to5Google dugout, there appear to be a total of four unreleased Pixel models. The most interesting of them all is the foldable Pixel, touting the codename ‘Passport’, which likely describes the form factor of the device. The model numbers associated with the following Pixel smartphones are for the Japanese variants, and their codenames have also been listed.