https://wccftech.com/intel-dg2-256-soc3-gpu-spotted-with-256-eus-2048-alus/

Intel's third DG2 GPU based on the Xe-HPG architecture, the SOC3, has been spotted within Intel's Graphics System Controller Firmware Update library in Linux.

So far, we have only known two Xe-HPG powered DG2 GPUs, the Intel SOC1 'DG2-512' & the SOC2 'DG2-128'. Both of these chips are based on the TSMC 6nm process node but it looks like Intel may have another chip in its portfolio.