6.0 is basically the falcon release with subquery optimizer additions.
6.1 Online backup, more subquery optimizations, foreign keys for main engines, and more performance diagnostics.
Online Backup Detail:
MYSQL Enterprise (Paid use Server)
- Support, Server, and tools
- New Replication monitoring
- New Backup Management
- Possible problem SQL events monitoring
- MYSQL Workbench, follow up to dbdesigner
- Monitoring Tools: