Breaking news: the first preview version of Exchange 2016 just have been published. Head to the Exchange Team Blog to learn more or download all the 1.7GB of the latest and best from the Microsoft Download Center.

As always, we are committed to provide support in ORF for the latest Exchange version as soon as possible, so as of writing this, VMs are already firing up up and work has already started on compatibility testing. ORF 5.4 will likely arrive before Exchange 2016 goes to RTM, so we will likely dedicate a minor release solely to Exchange 2016.