Microsoft’s Andreas Luther confirmed Microsoft is planning to release a new major release of Windows Server every 4 years with an R2 release in between.
He also revealed some of the new features for Active Directory in Longhorn Server.
1. Read only DC. At first this sounds like the comeback of the BDC. It is indeed a read only copy of a read/write DC that does a one way copy.
The read-only DC is designed with a branch office model in mind. The read only DC will only authenticate clients from its own site and is less vulnerable for a physical attack.
Major release of Windows Server every four years, hmm, that works out to Longhorn Server R2 in 2009 and Blackcomb Server in 2010.