Have the X395 (3500U config) -- running Pop!_OS without issue.
Looks awesome, but the 16G of RAM and the 14" 1440p are what makes the X1 awesome.
The X395 is available with 16GB RAM. Don't recall screen resolution. Looked into buying one but my XPS13 developer edition's warrantee doesn't expire until next October.
My next laptop will be a Zen 2, regardless of whether or not Dell steps up to the plate. I hope they do. I prefer the fit and finish of my current XPS13 to my previous X230. Also the XPS 13 developer edition ships with Linux, which I approve of.
I only say 8GB option on the site. Resolution maxes out at 1080p
The T495s should be the solution for this but annoyingly they don't offer the 1440p screen like they do on the T490s (that can even go to 32GB of RAM).
But the an AMD X1 would be awesome indeed. The better chassis and 4K screen would make it the ideal machine for me. I'd love it if they did that in the Gen 8 but I'm not holding my breath...
And so would I. X1 has been my workhorse for the past 5 years or so. If the native Linux GPU drivers work well, I'd upgrade to a Radeon APU based X1 Carbon. I don't even care if it's expensive.