There was some. Cathode Ray Dude recently did a video on an Alienware laptop with HDMI in. This isn't really the same thing though. It's letting you use a USB

There was some. Cathode Ray Dude recently did a video on an Alienware laptop with HDMI in. This isn't really the same thing though. It's letting you use a USB capture card with your iPad. This is something already doable with random Android devices for years and has limitations like latency and quality.