This second release candidate includes Windows Search 4.0, Bluetooth 2.1 feature pack, the ability to record data on to Blu-Ray media natively in Windows Vista, the addition of Windows Connect Now for simpler Wi-Fi configuration, and an exFAT file system that supports UTC timestamps, LeBlanc said.
Quote
"We expect Windows Vista and Windows Server 2008 SP2 to be publicly available in Q2 2009," LeBlanc wrote.