Mr Karanbir Singh, representing CentOS community announced public availability of CentOS 7 (1511). This is 3rd update of CentOS 7 series of enterprise operating systems. This release is only available for X86_64 bit systems at the moment.
From release announcement:
Find more information in complete release announcement.
From release announcement:
Updates released since we froze the iso and install media content are posted in the updates repo along with the release. This will include content from late November 2015 and December 2015, therefore anyone running a new install is highly encouraged to run a 'yum update' operation immediate on install completion. You can apply all updates, including the content released today, on your existing CentOS Linux 7/x86_64 machine by just running 'yum update'. Note that it might be upto 24 hrs from this announcement before the entire mirror network has got the updated content.
Find more information in complete release announcement.