After a lengthy promotional campaign and a fair bit of leaks the OnePlus 6T is here just about six months after its predecessor arrived on shelves. At this point we're well aware of what the OnePlus 6T brings over the OnePlus 6 but we'll go over it again. Half of the OnePlus 6T's improvements are in the hardware and the other come through software. The former include a smaller water drop-styled notch, an in-display fingerprint scanner and a larger battery. The latter include improvements to the camera and the performance. There's one hardware regression we need to get out of the way...
Source: https://www.gsmarena.com/oneplus_6t_is_here_with_a_smaller_notch_indisplay_reader_bigger_battery-news-33953.php