Unlucky for some: it's 13 January 2015, and that means the end of free support for Windows 7.
Happily that doesn't mean your computer is going to automatically break or stop working, but it does mean Microsoft will no longer offer free help and support if you have problems with your Windows 7 software from this point on. No new features will be added either.
Microsoft is keen to move users onto Windows 8 instead -- to find out more, check out our how-tos, troubleshooting, news and reviews of Windows 8. Alternatively, you can wait for Windows 10 later this year.
Windows 7 was released in 2009. It sold over 100 million copies in six months and remains hugely popular. More stable than predecessor Windows Vista and more familiar than its radically redesigned successor Windows 8, version 7 is still estimated to be running half of the world's PCs.
As of today Windows 7 has moved from mainstream support -- free help for everyone -- to extended support, which means Microsoft will charge for help with the software. That will end in 2020, when Microsoft turns out the light on Windows 7 for good.
If you're worried about security, Microsoft will continue to patch security issues, so if you do stick with Windows 7 your computer shouldn't suddenly become vulnerable to hackers targeting the software.
The next generation of Microsoft's venerable operating system is-- they're skipping 9, for some reason -- which is due in the second half of this year. Microsoft is set to make an announcement about Windows 10 a week from now on 21 January, so stick with us to find out what Gates' mates have up their sleeves. In the meantime, check out our video for an early look at the next generation of Windows: