FRAMINGHAM, Mass.--(BUSINESS WIRE)--Staples, Inc. (NASDAQ: SPLS), one of the world’s largest internet retailers, celebrates the launch of Windows 10 with the arrival of new devices, deals, demonstrations and free services. Starting July 29, customers can purchase the latest devices optimized for Windows 10 online at Staples.com and upgrade eligible devices to Windows 10 for free with Staples EasyTech Services. “Staples is excited to help our customers experience the best of Windows 10,” said Pe