Before you all misinterpret the headline, this does not mean support for all flavors of Windows 7 will end on April 9, 2013. The “RTM” stands for “Release to Manufacturing” so this means it only applies to the original release of Windows 7.
Most Windows 7 users will have already install Service Pack 1 as it was released on February 22, 2011. As long as you have installed SP1, mainstream support will continue until January 13, 2015. Extended support, which includes security fixes, will continue until January 14, 2020. So there is no rush to install another operating system as long as you have SP1 installed.
I’ll also remind Windows XP users, that The Clock is Ticking on Windows XP. Just as I’ve detailed the end of support for Windows 7 above, support will soon end for Windows XP. That date is April 8, 2014 so it is just over a year away. If you are still using Windows XP, you need to start looking at upgrades now!