MongoDB 7.0 introduces several features to improve developer productivity and performance, including compound wildcard indexes, bitwise operators in the aggregation pipeline, percentile operators, and role-based data access through the $$USER_ROLES variable. These new features enable developers to write more efficient and intuitive queries, reducing optimization time and enhancing the overall development experience. The introduction of these features represents a significant upgrade in MongoDB's ability to support complex applications and large-scale data analysis.