Microsoft reveals new logo - new image? Summary: Microsoft unveils its first new logo in 25 years and only its fourth since 1975. By Andy Smith | August 23, 2012 -- 17:46 GMT (10:46 PDT) Previous | Next Image 3 of 13 Microsoft's original logo was replaced in 1975 after a short shelf life. Topics: Microsoft, Legal Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.