On Geekbench we can analyze first reports from benchmark tests of new Sony's flagship device with codename H8266, but in real behind this codename probably hides Sony Xperia XZ2, but this is just a supposition. Phone reached good result, which shows that it may be able to rival with Samsung Galaxy S9 in future, especially if we will take into account the newest information that Sony's new flagship device will have the same processor as Samsung Galaxy S9 - it will be Qualcomm Snapdragon 845.
Apart from information about processor we know that phone will have 4GB of RAM and it will debut with Android in 8.0 version. There are some rumors about cameras used by Sony in this device, and it's highly probable that H8266 will have dual camera setup on back with two 12mpx sensors.