Earlier this year, Sony unveiled the Xperia Z2 which was the successor the last year’s Xperia Z1. However if the rumors are to be believed, Sony could be working on its successor already, the Xperia Z3, which is rumored to be arriving in August with a metal frame. It remains to see if that will be happen, but so far we’ve seen a handful of Sony Xperia codenames where it is possible that one of them is pointing at the Xperia Z3. That being said, a certain Sony handset has made an appearance on the TÜV Rheinlandwebsite which is used to test the safety and quality of devices. While the listing does not actual name the Xperia Z3 in question, some are speculating that this is a possibility. The model numbers that were listed includes the PM-0800-BV (D6603), PM-0804-BV (D6643), PM-0801-BV (D6616), PM-0806-BV (D6653), PM-0802-BV, PM-0803-BV, and PM-0807-BV.