https://wccftech.com/oneplus-8t-case-gets-listed-on-amazon-confirms-how-the-phone-looks/

OnePlus 8T is going official in less than a week on 14th October, and although we are aware of what the device is going to look like thanks to a slew of leaked renders and specs over the past couple of months, today we have the most concrete leak that confirms all the key design elements as well as how the phone is going to look.

The leak is coming from a listing on Amazon India by UAG (Urban Armour Gear) a famous case manufacturer, who listed their Plasma case on the website. This is not the first time a leak like this has happened. Case manufacturers tend to get their hands on the device diagrams or sometimes, even the devices so they can make their cases accordingly and launch them alongside the devices.