Sure it's tardy, but it's also really useful, and it's nice to see Linux continuing to improve, no matter how slowly.

This isn't something that looks like magic, it's just something that will make users more productive and less stressed. That's the kind of advance we need more of.

  >> Sure it's tardy, but it's also really useful, and it's nice to see 
  >> Linux continuing to improve, no matter how slowly.

Not to be the nitpicker here, but this is hardly a Linux issue, mostly about implementation in different desktop environments (GNOME, Unity, KDE, ...).

Everything is already on sysfs and randr. It's up to environments to adapt these changes. Which is great, because each of them can implement the behavior in the way that makes most sense for their users.