MongoDB 3.6` is the latest milestone in MongoDB's efforts to provide developers with a productive general-purpose data management system for modern applications. This release introduces several key features, including powerful query language capabilities, allowing developers to persist rich and nested data without flattening it out. The new `Change Streams` feature enables real-time notification of updates to collection data, while `Retryable Writes` ensures that writes are performed exactly once even in the face of network outages. Additionally, `JSON Schema` improves data validation by specifying valid document formats on a per-collection basis, and `MongoDB Atlas` has seen significant improvements, including cross-region clusters and new instance classes. Overall, this release is the biggest yet for MongoDB, with over 100 new and updated features that enhance its capabilities for modern applications.