The caGrid 1.4 Deprecation Plan details comprehensively the major deprecations and stable aspects of the caGrid 1.4 release.
A new resource property has been added to all caGrid 1.4 data services which indicates their support for CQL 2 and any extensions to CQL 2 they may support. Clients may access this resource property to verify the data service supports CQL 2. It's absence indicates a data service which was built with caGrid 1.3 or earlier. A utility class called the DataServiceFeatureDiscoveryUtil has been created to simplify checking for CQL 2 support and listing the supported extensions.