Microsoft have released the latest updates to Exchange. The updates are:
- Exchange Server 2013 Cumulative Update 7
- UM Language Packs for Cumulative Update 7
- Exchange Server 2010 SP3 Update Rollup 8
- Exchange Server 2007 SP3 Update Rollup 15
Exchange 2013 Cumulative Update 7 includes updates to:
- Public Folder Hierarchies (up to 250,000 folders)
- OAB Distribution improvements
- Backup improvements
This update will update the Active Directory Schema.
More details can be found at the following link