You can download the Intel HD Graphics driver update 15.28.7.2867. This update adds support for Windows 8 and comes with OpenGL 4.0 and Ultra HD (4K resolution) support. On top of that, the driver also boosts performance in dozens of games. 

NEW FEATURES: 
3rd Gen Intel Core processors with Intel® HD Graphics 4000/2500 now supports:

OpenGL 4.0 on both Windows 7 and Windows 8
High quality video playback of content up to 4096x2048 resolutions via hardware accelerated decoding.
Several video editing and playback applications (VLC Media Player*, CyberLink PowerDVD12*, Arcsoft TotalMedia Theater 5*, Media Player Classic* with CoreAVC* H.264 decoder and MediaCoder*) already provide support for this feature, with the list of applications expected to grow in the upcoming months.
EIZO DuraVision* FDH3601 4Kx2K resolution displays and other similar Ultra HD monitors on Intel Core™ i5 and i7 based systems with two DisplayPort outputs.
Control Panel now accessible through New Windows 8 UI.
Support for 3rd Generation Intel® Core™ Y-processor and Intel® Pentium® Y-processor product line added in this version of the driver.

This software driver package will install the Intel® HD Graphics driver for:
  
 2nd Generation Intel® Core™ Processors with Intel® HD Graphics 3000/2000 
 3rd Generation Intel® Core™ Processors with Intel® HD Graphics 4000/2500