But no more - I've been backporting Libreoffice for a while now from Fedora and you're free to use it!
Also, recently I noticed there are RHEL conditionals in the spec files. For those unfamiliar with RPM building this means Redhat is probably getting ready to include Libreoffice in their enterprise distro.
I don't know when we'll see Libreoffice in EL 6 officially but I know it won't be in v6.3. Until then you can use my repo - it should gracefully upgrade existing stock openoffice.org installations:
To install do the following as root:
rpm -ivh http://li.nux.ro/download/nux/libreoffice/el6/i386/nux-libreoffice-release-0-1.el6.nux.noarch.rpm yum install libreoffice
To upgrade from stock openoffice.org:
rpm -ivh http://li.nux.ro/download/nux/libreoffice/el6/i386/nux-libreoffice-release-0-1.el6.nux.noarch.rpm yum updateTo replace Libreoffice installed from the official libreoffice.org rpms:
yum remove libreoffice\* libobasis\* rpm -ivh http://li.nux.ro/download/nux/libreoffice/el6/i386/nux-libreoffice-release-0-1.el6.nux.noarch.rpm yum install libreoffice
If you run into issues feel free to leave a comment or drop me a line: rpm @ li.nux.ro