Intel hasn't admitted it. And while they pointed the finger at the BIOS, making it Gigabyte's issue. Intel released a new video driver and I haven't had the issue since using the new driver. So maybe it was Intel issue the whole time. But this is still no excuse for Gigabyte not releasing some newer non-Beta BIOS versions past F14. And I still wonder about the MRC code not being updated yet in the latest stable release. Below are the details of the new Intel driver that solved the flicker issue for me. At least for the past few weeks I have been using it. Hopefully it's solved for good now.
File name: Win64_153117.exe
Version:15.31.17.64.3257
Date:09/11/2013 Status:Latest
Size:136.11 MB Language:Multi language
Operating Systems:Windows 7 (64-bit)*, Windows 7 Enterprise, 64-bit version*, Windows 7 Home Basic, 64-bit version*, Windows 7 Home Premium, 64-bit version*, Windows 7 Professional, 64-bit version*, Windows 7 Ultimate, 64-bit version*, Windows 8, 64-bit*
That is the file I downloaded. Here is a link, It is for the Iris and HD series. Also for the latest 4th gen core series. I would make sure you have something actively running on the Intel grphics before installing this.
https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=23106&keyword=iris&DownloadType=Drivers&lang=eng