There is a long list of new replication features in the latest MySQL 5.6 release including:
- Binary log group commit
- Multi-threaded slaves
- Crash-save slaves
- Global Transaction Identifier (GTID)
- Replication checksums
- Optimized row-based replication
- Time-delayed replication
- Remote binary log backup
- UUID
This presentation from the MySQL Tech Tour events in New York and Boston provides an overview and syntax examples of many of these features. The Effective MySQL: Replication Techniques in Depth also discusses many of these features in detail. Chapter 3 is available for FREE download.