MongoDB 4.0 Release Candidate 0 Has Landed`: This release marks a significant milestone in MongoDB's evolution, offering enhanced features and performance improvements for modern applications. The new release introduces multi-document ACID transactions, enabling developers to ensure data integrity across multiple documents and collections. Additionally, the `aggregation pipeline type conversions` feature allows for standardized data transformation within the database itself, reducing complexity for downstream processes. Non-blocking secondary reads are also introduced, providing predictable low read latencies and increased throughput from replica sets. Furthermore, MongoDB 4.0 enables faster data migrations by up to 40% compared to previous versions, thanks to improvements in the sharded cluster balancer. The release also expands on change streams, allowing for real-time data tracking across entire databases or clusters. With these enhancements, MongoDB aims to provide a more robust and flexible technology foundation for modern applications.