Released the second service pack 2 server Exchange Server 2010

Flexible and reliable - Exchange Server 2010 SP2 gives you the flexibility to tailor your deployment based on your company's unique needs and a simplified way to keep e-mail continuously available for your users

Whats New In Exchange Server 2010 Service Pack 2

OWA Mini

Address Book Policies

Cross-site Redirection

Hybrid Configuration Wizard

Several hundred hotfixes

Conclusion

Full Article

Before installing the next article: go http://technet.microsoft.com/en-us/library/bb691354.aspx

Download: Microsoft Exchange Server 2010 Service Pack 2 SP2