ArcGIS 10.2.2 is now available for download from the Esri Customer Care website.  ArcGIS 10.2.2 is a minor incremental release focused on software fixes and quality.  Issues that have been fixed are listed here.

Also, if you use an Oracle geodatabase, there is a required patch you need to install with your 10.2.2 software.

Install guides: Desktop and Server (Windows or Linux).