Microsoft will indeed provide support for their home and corporate antimalware products on Windows XP until July 14, 2015. This does not affect the end-of-life date of Windows XP, or the supportability of Windows XP for other Microsoft products, though. In other words, after April 4, 2014 Microsoft will continue publishing signature updates for Forefront and Security Essentials products, but will no longer provide any security updates, hotfixes or updates for Windows XP.
F-Secure will support corporate customers using Client Security 11.x or Anti-Virus for Workstation 11.x on Windows XP until the end-of-life of these products, which will be until July 3rd, 2016 according to the current product life policy.
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