Microsoft release Service Pack 1 for Exchange 2013 this week. A couple new Hybrid related features are enabled with Exchange 2013 SP1:

  1. Ability to configure OAuth Authentication between Exchange and Exchange Online Organizations
  2. Hybrid Deployments with Multiple Active Directory Forests

Click on each of the links above to learn more about these new features, requirements and how to deploy. Great new functionality, nice that Microsoft is expanding the Hybrid deployment options and making the coexistence between on-premises and Online a much richer experiance!