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Ubuntu users can use repository at launchpad.
See Install Ubuntu page for instructions.
OpenSUSE/SLE users could use up-to-date packages from QtDesktop repository.
Fedora/Redhat/CentOS users could use up-to-date packages from QtDesktop repository.
Arch Linux users can install it form AUR.
Agilia Linux users can install it form Userland repository.
Gentoo users can install it directly from the official portage or from the "qt" overlay.
Mageia users can install it from the official repositories.
ALT Linux users can install it from the official repositories.
Slackware Linux users can install it form the SBo repository.
You can build from source instead of using a precompiled binary..

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