Edit: Due to the fact that this article is old, the installation instructions may not work anymore. In order to successfully install the latest version of LibreOffice, please access the libreoffice tag and open the latest article (the one on top).

The latest installation instructions for LibreOffice
Hello Linux Geeksters. As you may know, LibreOffice 4.2.5 RC2 has been recently released. For information about this release, see the changelog.
In this article I will show you how to install LibreOffice 4.2.5 RC2 on Fedora, CentOS, OpenSUSE, Mageia, OpenMandriva and other derivative systems.
Because it is not available via any repository, we have to download the archive containing the libreoffice packages from the official site, extract the archive and install the rpm packages inside. Follow the instructions for you system and architecture exactly, in order to get a successful installation.
How to install LibreOffice 4.2.5 RC2 on 32 bit Fedora, CentOS, OpenSUSE, Mageia, OpenMandriva and derivative systems:
$ wget download.documentfoundation.org/libreoffice/testing/4.2.5/rpm/x86/LibreOffice_4.2.5.2_Linux_x86_rpm.tar.gz
$ tar -xzvf LibreOffice_4.2.5.2_Linux_x86_rpm.tar.gz
$ cd LibreOffice_4.2.5.2_Linux_x86_rpm/RPMS
$ sudo rpm -i *.rpm
Optional, to remove LibreOffice 4.2.5 RC2, on Fedora and CentOS do:
$ sudo yum remove libreoffice*
Optional, to remove LibreOffice 4.2.5 RC2, on OpenSUSE do:
$ sudo zypper remove libreoffice*
Optional, to remove LibreOffice 4.2.5 RC2 on Mageia OpenMandriva and ROSA Desktop, do:
$ sudo urmpe libreoffice*
How to install LibreOffice 4.2.5 RC2 on 64 bit Fedora, CentOS, OpenSUSE, Mageia, OpenMandriva and derivative systems:
$ wget http://download.documentfoundation.org/libreoffice/testing/4.2.5/rpm/x86_64/LibreOffice_4.2.5.2_Linux_x86-64_rpm.tar.gz
$ tar -xzvf LibreOffice_4.2.5.2_Linux_x86-64_rpm.tar.gz
$ cd LibreOffice_4.2.5.2_Linux_x86-64_rpm/RPMS
$ sudo rpm -i *.rpm
Optional, to remove LibreOffice 4.2.5 RC2, on Fedora and CentOS do:
$ sudo yum remove libreoffice*
Optional, to remove LibreOffice 4.2.5 RC2, on OpenSUSE do:
$ sudo zypper remove libreoffice*
Optional, to remove LibreOffice 4.2.5 RC2 on Mageia OpenMandriva and ROSA Desktop, do:
$ sudo urmpe libreoffice*