May was the seventh full month of availability for Microsoft's latest operating system version: Windows 8.1 continues to grow slowly while Windows 8 remains largely flat,allowing the former to finally pass the latter in market share. At the same time, Windows 7 has managed to climb back over the 50 percent mark, while Windows XP still has more than 25 percent of the pie, despite support for the ancient OS finally ending in April."

http://tech-beta.slashdot.org/story/...n-market-share