Microsoft
On August 23, 2012, Microsoft unveiled a new corporate logo at the opening of its 23rd Microsoft store in Boston indicating the company's shift of focus from the classic style to the tile-centric modern interface which it uses/will use on the Windows Phone platform, Xbox 360 and the upcoming Windows 8 and Office Suites.
The new logo also includes four squares with the colors of the then-current Windows logo. This logo is, however, not completely new - it was featured in Windows 95 commercials from the mid-90s. Each color represents a major product of the company: blue for Windows (hence the Windows 8 logo), green for Xbox, red for Office, and yellow currently unknown.