A report has come in that Microsoft's second Service Pack for Vista may be delayed by up to a month or so. It's been six weeks since it reached beta status and although a release candidate was originally scheduled for February, this apparently now won't see light of day before sometime in March.

This will mean that the RTM (release to manufacturing) build will be pushed closer to the end of Q2; sometime in mid/late May.

Here's a reminder of the most noteable features SP2 will bring to Vista :-

Windows Search 4.0 - Also used by Office Outlook 2007 and Office OneNote 2007, Windows Search 4.0 builds on Microsoft's search technology with improved indexing and search relevance
- Improves Windows Media Center (WMC) in Content protection for TV.
- Adds support for the 64-bit central processing unit (CPU) from VIA Technologies, which adds the ID and vendor strings for the new VIA 64-bit CPU.
- Integrates the Windows Vista Feature Pack for Wireless, which contains support for Bluetooth v2.1. Bluetooth v2.1 is the most recent specification for Bluetooth wireless technology and Windows Connect Now (WCN) Wi-Fi Configuration.
- Improves performance for Wi-Fi connection after resuming from sleep mode.
- Adds new capabilities to Direct X Graphic display reliability. The graphics experience has been greatly improved for users, such as gamers, running applications that require a lot of graphics processing.
- Includes updates to the RSS feeds sidebar with improved performance and responsiveness.
- Improves audio and video performance for streaming high definition content.
- Includes ability to record data to Blu-Ray media.