Here's the latest version of the Xrandr GUI, that'll be uploaded post-beta.
We've taken care of the major show stopper issues by this point. There's still a few driver-specific xrandr bugs (like lockups when rotating) yet to be sorted out in the coming weeks and months.
You can access this tool via the 'Screen Resolution' link in preferences, or on the command line via 'gnome-display-properties'.
There are obviously still a lot of features to be added,
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