Litestream v0.5.0 introduces major performance improvements and point-in-time recovery for SQLite databases. The update replaces the old WAL-based backup system with a new LTX file format that enables transaction-aware backups, hierarchical compaction, and faster restoration. Key changes include eliminating the generations concept for simpler backup management, supporting restoration from an average of just a dozen files, and adding NATS JetStream as a replica option. The upgrade is backwards compatible with existing configurations, though it can't restore from old v0.3.x WAL files. Future plans include a VFS for instant read replicas that can serve pages from S3 while hydrating in the background.