Was wondering that too. The XZ2 compact is pretty similar to the regular XZ2, so I was expecting to find it in the list when it comes to the P Preview. Kind of disappointed, I left Samsung for a compact device with close-to-stock android. I still have time to return it

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Later edit: I've been chatting with Sony's support team, they say the developers did not mention if they are planning anything for the XZ2 compact, so I am guessing this is not going to happen.