"End of support" means there will be no more fixes or patches -- paid or free, security or non-security -- coming for specific products. (There are
some temporary workarounds, as Windows XP users have discovered, but as a general rule, end of support means, for most intents and purposes, the end.)
Mainstream, free support is ending on January 13, 2015 for a number of major Microsoft products, including
Link Removed (Enterprise, Home Basic, Home Premium, Ultimate and Starter).