I’ve been waiting a decade for 5K120 to be ubiquitous. That it might start existing with real selection (and competitive pricing) in the next year is fantastic. For the record, I’m talking about for productivity, not gaming. I’m aware that 4K is everywhere, but I’ll take the extra 77.8% logical work area every time.
Personally, I find the 8K ultra-wide announced via the Samsung partnership more exciting; that's exactly what I've been waiting for.
I think around 27"/8k (326 ppi) is where I really couldn't tell. 4k laptops are already at this density.
As I mentioned with "productivity, not gaming", preferring 5K over 4K isn't about making picture prettier.
This is about having a 5K 27" screen with 177.8% of the work area of a 4K 27" screen. A 5K display (5120 x 2880) is 14,745,600 pixels, whereas a 4K display (3840 x 2160) is 8,294,400 pixels, yet a 27-inch panel is a 27-inch panel. It's about more stuff in the same area. It's why I've been using 1440p panels since 2010 instead of 1080p panels (and a 1920x1200 panel back in 2004). Just now everything on the screen can be crisper, since we use four pixels (2 x 2) to define the same logical area we used to define with a single pixel.
It's like having a 77.8% larger desk, except the desk is the same physical size as the "smaller one." This is about more of my work being visible at once.
I'm disappointed to see a max 3 DP + 1 HDMI output though. Was hoping I'd be able to attach a VR set without unplugging my 4th monitor some time in the future.
* 2x DisplayPort 2.1
* 1x HDMI 2.1
* 1x USB-C, likely supporting DisplayPort as said above
Some add-in board (AIB) partner cards may replace this USB-C port with another DisplayPort port.
Now if you have an APU or CPU with iGPU, then it may be possible to enable both discrete and onboard graphics so you can fully utilize them.