OnePlus is working on the OnePlus 13 Mini smartphone now, according to leaker Digital Chat Station 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.