The latest release of Couchbase 4.6 introduces Data Structures as a new time-saving SDK feature that allows client applications to easily map JSON array-based data into language-specific structures, reducing the need for manual management and saving developers time and hassle. This feature supports various languages including Java, .NET, Node.js, Go, PHP, Python, and C, with specific examples provided in Java (using the Map type) and Python (using List and Queue types). The new data structure types include Map, List, Set, and Queue, which are variants of JSON arrays presented as native types to client applications. These structures can be used for various use cases such as IoT applications where sensors record timestamped activities and related data values. By leveraging native collections support in Couchbase, developers can offload management of these structures to the server, simplifying communications and reducing development time.