Eric Hameleers has built LibreOffice 4.0.2 packages for Slackware users. They are built for Slackware 14.0, but they are usable for Slackware-Current users as well. This monthly update was released this week and contains bug fixes and translations update.
People working on enterprise environment are still advised to stick with LibreOffice 3.6.5 which will be updated to 3.6.6 in short time. Probably they will lift the warning on next release in May.