GNOME 3.10 brought initial work on HiDPI support -- displays with very high pixel densities -- and that support improved greatly with GNOME 3.12. Most of that work up to now has been about supporting HiDPI displays under the X.Org Server, but now for GNOME 3.14 there's basic HiDPI support for Mutter on Wayland...
May 27, 2014
GNOME Mutter 3.13.2 Brings HiDPI Support On Wayland
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