Cinnamon 3.0 is now officially announced and first initial packages are now pushed to testing directory at the usual place (Thanks to Darren for hosting the CSB project).
Please note that this packages are built againt Slackware Current per April 24 2016. Since current is still considered a moving target, things *may* break when new updates are coming in the future. Official packages will be rebuilt against Slackware 14.2 when it's released.
Since it's only for public testing, i only build for x86_64 platform.
Please help by testing them and report back whenever you found any issue