Ah yes the Zenbooks!
Just a heads up to buyers: With the 3200x1800 and 3840x2160, ASUS used RG/BW Pentile screens in these laptops last year, meaning not truly 3200x1800 or 3840x2160. Each RGB pixel is replaced with either only RG or only BW. It is unconfirmed but likely that they are doing the same thing this year.
They give you all the downsides of a high resolution display (potential scaling issues, potential worse battery life) without all the benefits (picture less sharp, details can appear fuzzy, diagonal screen door effect can be present).
My personal recommendation is to wait for Notebookcheck.net reviews of these before purchasing in order to confirm the subpixel matrix, and to consider purchasing different models from another manufacturer unless ASUS has started using true high-resolution displays this time. Many manufacturers/models have moved on to true high resolution displays.