FreePBX Version 12.0 Supports Asterisk 1.8, 10, 11 and 12. It is currently in Beta

This is currently BETA

Supported/Tested *nix Distributions 
DistributionDate Last TestedCertifiedTestedCommercial Module SupportNotes
CentOS 6.56-19-2014NoYesYes (Install)The "recommended" distribution for FreePBX
Ubuntu Server 14.04 LTS6-20-2014NoYesNo