"There have been incessant rumors that Microsoft has ceased producing Service Packs. It is widely believed that the Service Pack 1 for Windows 7, which was released half a decade back, is the only one for the previous generation of the Windows operating system. However, the company has neither confirmed nor denied the rumors, which is adding fuel to the fire. Unless Microsoft makes an official statement, the rumors are going to grow and become more widespread."
[
techbeat.com]