I want to know the answer to the following question:
When did Microsoft make the existence of Windows 8.1 with Bing OEM SKU official?
All the background I'm provided with is that "On April 2, 2014, Microsoft ultimately announced that it would be removing license fees entirely for devices with screens smaller than 9 inches, and officially confirmed the rumored "Windows 8.1 with Bing" OEM SKU on May 23, 2014.". Is that enough to answer the question?