The new Spring Data Aerospike release 4.6.0 introduces several features and enhancements for customizing set names and using batch write operations, including the ability to provide a set name per operation, supporting batch-write operations such as deleteAllById(), saveAll(), insertAll(), updateAll(), and deleteByIds(). It also supports versioned documents with generation counts retrieved from the database records. The new features allow developers to easily specify which set they want to use, avoid potential conflicts with data from other sets, and group multiple operations into one unit for a single network trip to each database node. Additionally, it provides examples of utilizing batch-write operations in Spring Data Aerospike, including saving multiple non-versioned documents, inserting multiple new records, updating multiple existing records, and deleting multiple records in one request.