It's a bit uncertain if this is the real thing, but a bit of spy photos have been posted on what presumably is the Radeon RX 6600 XT.

The 6600 XT will be based oN NAVI23. The photos show merely a part of the back-plate, but that sticker states it all, a  PC Partner label (OEM), identical to the sticker you can find on the AMD reference boards. The bar-code sticker states Navi 23 XT and that means this is very probably to be the Radeon RX 6600 XT. The RX 6600 XT is based on the 7nm Navi 23 chip with 2048 stream processors. According to rumors get desktop card 8x Gen 4.0 PCIe lanes 

The card is expected to be released with a VRAM buffer of 8GB GDDR6, other than that there's little to show and tell about what you can spot in the photo aside from display configuration, have a peek.

Possible RX 6600 XT Photo Surfaces (OEM)