As the final release of Windows 7 draws near, Microsoft announced it has wrapped up work on the second service pack for Windows Vista and Server 2008. The update was released to PC manufacturers yesterday and will be available to the public via the company’s automatic updates mechanism before the end of the quarter.

As we have mentioned before, SP2 brings with it native support for Blu-ray burning and Bluetooth 2.1, improved Windows Search and easier Wi-Fi configuration. It also includes a bundle of all the updates and security fixes that have been released since the last service pack and will require SP1 as a prerequisite to avoid making it cumulative and therefore much a larger download. The total size of the update ranges from around 350MB (x86 five-language stand-alone) to more than 1.6 GB (all-language ISO image).

In addition, Microsoft is also disabling the Vista SP1 blocker tool as of today, which means those who haven’t already upgraded their systems will see the first service pack starting to appear in Windows Update.