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.
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...
I configured mine with 16G RAM, but yeah, the screen options max out at 1920x1080 and 300nits. That said, for a laptop with this form factor it's got an amazing keyboard.
