The latest version of Configuration manager which is V1511 (YY/MM) RTM for December 2015 from Microsoft is now available for download and ready to install to production Environment.
We call this version as System Center Configuration Manager current branch (CB) and Microsoft has updated TechNet documentation on December 8 (Yesterday) for this version .The documentation is Applies To: System Center Configuration Manager (current branch) https://technet.microsoft.com/en-us/library/mt346023.aspx
As you all know by now that ,going forward ,Microsoft do not use year or product identifier like previous versions 2003,2007 and 2012 and it supports incremental product updates (no more service packs or cumulative update versions to track) called update versions like YY/MM whenever new updated published (servicing model).
Download the Evaluation version of System Center configuration manager V1511 from https://www.microsoft.com/en-us/evalcenter/evaluate-system-center-configuration-manager-and-endpoint-protection
To know more about this product what's new in Configuration manager V1511,read https://technet.microsoft.com/en-us/library/mt622084.aspx
Couple of important links that would like to share for reference are below:
Get ready for System Center Configuration Manager https://technet.microsoft.com/en-US/library/mt608540.aspx
Design a hierarchy of sites for System Center Configuration Manager https://technet.microsoft.com/en-US/library/mt622312.aspx
Supported operating systems for sites and clients for System Center Configuration Manager https://technet.microsoft.com/en-US/library/mt589738.aspx
Support for SQL Server versions for System Center Configuration Manager https://technet.microsoft.com/en-US/library/mt589592.aspx
Prepare your network environment for System Center Configuration Manager https://technet.microsoft.com/en-US/library/mt346021.aspx