There are two dominant software projects that provide Linux with a graphical user interface, but only one of them will get long-term support in Ubuntu's next version of the open-source operating system. GNOME, the default user interface for Ubuntu, will receive the support, but KDE won't.
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The reason, according to Canonical, which sponsors Ubuntu and is trying to make a business of selling the support contracts, is simply that KDE is at an awkward transitional period between two versions, the old-line 3.5 and the imminent and significantly different 4.0.
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