Ditto 4.13 introduces enhancements in query performance, platform coverage, and synchronization efficiency, notably expanding support to Windows as part of its Flutter integration, allowing developers to deploy Ditto-powered applications on Windows desktops without modifying existing code. The update significantly improves query handling by enabling the use of multiple indexes for complex predicates, enhancing performance for large datasets, and offering tools like the EXPLAIN keyword to analyze index utilization. Additionally, the release optimizes sync reconnection scenarios through intelligent session resync detection, which efficiently manages peers reconnecting after offline periods by determining when a full session resync is preferable over incremental updates. This results in faster convergence and reduced bandwidth use in environments with intermittent connectivity. Alongside these major features, Ditto 4.13 also includes various bug fixes and stability improvements across platforms, contributing to a more robust developer experience.