ESRI has stated that it will not do a full new version release, instead they will release “updates” such as ArcGIS 10.2.1 and 10.2.2

Regarding ArcSDE, both releases (ArcGIS 10.2.1 and 10.2.2) will be the last releases for ArcSDE as an application server (binaries), and ArcSDE Command Line.

Reference Link: http://blogs.esri.com/esri/supportcenter/2013/12/19/deprecation-of-arcgis-10-1-and-release-of-10-2-1/