You can order the XZ1 Unlocked with OREO installed on Amazon $699
http://www.androidpolice.com/2017/09/19/sony-xperia-xz1-now-shipping-us-699-99-android-oreo-board/
http://www.androidpolice.com/2017/09/19/sony-xperia-xz1-now-shipping-us-699-99-android-oreo-board/