Intel has posted versions 15.22.54.2622 (32-bit) and 15.22.54.64.2622 (64-bit) of its drivers for the Intel HD-series lineup of integrated graphics processors, which includes both Sandy Bridge and older Nehalem-based chips in both desktop and laptop computers. The drivers are available for all editions of Windows Vista and Windows 7.
Of the Big Three players in the graphics market, Intel is the most erratic about its driver releases - their last generic driver was posted way back in September, and while that driver brought a good number of performance improvements and bug fixes, Intel's latest and greatest fixes just three documented issues: a crashing issue with a program called Interstage Studio Standard J-edition, an issue where the driver would change the refresh rate while on battery power, and an issue where content would appear strangely when rewound. Not terribly exciting, given the wait, but I'm sure that the people experiencing those problems are grateful for the fixes.
As always, Intel notes that these are generic drivers which may or may not be missing features present in the drivers provided by OEMs. I've never had issues using generic Intel drivers on any of my machines, from homemade desktops to OEM laptops to Macs running Windows, but your mileage may vary.
Source: Intel
I think this might actually fix something odd that I noticed. I turned my AVR to my HTPC the other day, and I noticed that XBMC didn't look right at all (looked like the resolution got messed up). I realized after reading that fix that my power went out for a brief moment prior to that event, and it would have gone on battery backup. I don't know how much XBMC likes having the resolution (including refresh rate) adjusted while it's running.