The DG2 is an upcoming Xe-based discrete video card from Intel. It's based on the gaming-oriented Xe-HPG architecture. According to the rumor mill, Intel tapped TSMC to manufacture the DG2 on a 6nm process.
Intel will launch the DG2 this year but we don't have a specific launch date yet. VideoCardz speculates Intel may launch it in the second quarter of this year, alongside the release of the Tiger Lake-H laptop processors. There was a rumor recently that the DG2 may find its way into some high-end gaming laptops.
Performance-wise we have no idea what to expect. Last month the DG2 with 128 EUs was seen underperforming the Xe-LP (with 96 EUs) in Geekbench but that was clearly an early engineering sample.