I’m seeing stylus support (of some sort) from Asus, Dell, HTC, HP, Lenovo, Samsung and Sony - you’ll have to do some research to figure out which models are coming out, when and whether they’re Wacom or capacative, etc. None yet that I see have a big enough screen or well enough spec’d GPUs.
The Tiachi from Asus looks promising and shows a 256 level stylus in the video (but not in the specs), so it may be Wacom or some hopeful equivalent http://www.excaliberpc.com/621485/asus-taichi-21-dh71-11.6-touch.html
I continue my daily search for that perfect one…