Recent Windows versions have improved support for high resolution monitors with more than 96 dpi. Currently, the Xara products all look blurry on such monitors (including DPX9). There are some Windows API functions and messages (see SetProcessDPIAware/SetProcessDpiAwareness) that can be used to use all the available screen resolution.

Since more and more monitors today (especially laptop monitors) have very small pixel sizes, it is an important feature to support, especially for any kind of graphics software. Would be very nice to see that for DP10 (it's what currently keeps me from upgrading, because the experience is really quite bad).