MongoDB 3.6 introduces several key features designed to help developers build apps faster, including change streams, retryable writes, and fully expressive array manipulation. The new release also offers improved DevOps capabilities with Ops Manager, schema governance, and compression. Additionally, MongoDB Atlas, a fully managed database service, is now available on AWS, Azure, and GCP, providing users with the flexibility to run anywhere - private clouds in their own data center, public cloud, or hybrid models. Key features of MongoDB Atlas include turnkey global distribution of clusters with cross-region replication, auto-scaling storage and performance optimization, and a cloud database platform for development and testing. The new release also enables teams to build apps that maintain continuous availability in the event of geographic outages and improve customer experience by locating data closer to users.