Chances are some of you have heard of the hot new emulation trend involving AI upscalers. Rather than using a basic algorithm like bicubic sampling, this uses a trained AI model to estimate what detail is and how best to scale it up to a higher resolution. This is mostly intended for photos, but it's had some success with game textures as well.
You can see where this is going; over the past day I've been dicking around with these using the Deus Ex textures, and the results are pretty promising. The most common system used in 'the scene' is ESRGAN (since it's free), but I didn't think the results were very good for textures. Instead I've been using a commercial application, Topaz A.I. Gigapixel, and the results are pretty good.