If you’re using a computer with pre-installed Windows 7 and would want to continue receiving updates, security fixes and other support from Microsoft, then you may want to download Windows 7 SP1, since Microsoft will no longer support Windows 7 RTM (with no service pack) after April 9th, 2013.
Microsoft announced this last Feb 14, they explained that they’re stopping the support for Windows 7 RTM, because Windows SP1 have been released for almost 2 years and that their standard Windows support policy said they can only support a product (Windows 7 RTM) for 2 years after the release of a new service pack which is SP1.
Microsoft further explained that once Windows 7 user installed SP1 they receive mainstream support until January 13, 2015, and extended support up to January 14, 2020, by then Windows 7 will 11 years old and Microsoft will most likely have released 2 or 3 new versions of Windows OS. (Windows 11?).
For the none-tech and those who are not familiar with Software Life Cycle; RTM stands for Release To Manufacturer which are mostly used by OEMs or those Windows that are pre-installed to branded computers that you buy from retail stores.
Just in case you want to check if you already have SP1, you can open “RUN” box by pressing the Windows key + R then type WINVER and the ABOUT WINDOW screen will appear, you should be able to tell if you have SP1 installed or not.
Microsoft also explained the difference between “Mainstream” and “extended” support as well as other FAQs regarding their announcement, you can read more on their announcement by clicking on the source link below.
Last modified: February 18, 2013