OnePlus is working on the OnePlus 13 Mini smartphone now, according to leaker Digital Chat Station. The OnePlus 13T will launch in late April in China.

OnePlus 13T to come with a 6.3-inch 1.5K 120Hz OLED Flat screen powered by a Snapdragon 8 Elite SoC, packed by a 6200mAh battery with 80W fast charging,
The phone will feature a bar-shaped dual-camera design, a 50MP main camera, and a 50MP 2X telephoto camera, a new customizable button, replacing the alert slider.
No More details have been leaked yet.