If this is what gets released, I'm done with iPads. I have a 9.7" Pro, and I'll keep that as long as it works. Even that iPad is hard to hold for long periods; it's just too thin, and if I want to set it down on a pillow in my lap, there's no way to keep it in position. By contrast, I also have a current Surface Pro that's easier to hold (MS added a rounded edge) and it has that great kickstand that adjusts to any angle.
I'm OK with Face ID (Surface Pro has it, and I use it), but for a device that's going to lay flat on a desk, it would be more awkward. (Kickstand, again; I never leave the Surface Pro in use and flat on a desk.) Loosing the headphone jack is a real negative; I have too many devices to have wireless paired to each. Laptop and two desktops are Windows. My digital piano doesn't have wireless support at all, so I'll be using wired headphones there for a long time to come.
Surface has other advantages. 3:2 aspect ratio, better keyboard cover, stylus has an "eraser", and runs Windows desktop software, including Office, Photoshop, and software development tools. It's also way better for watching videos. It's my portable workhorse machine, and there's really no place for an iPad in my life, except as an occasional backup for music or reading.