WZor, the notorious and accurate leaker of upcoming Windows releases, has posted some information on the upcoming Windows 8.1 Update 1. Very little information has been given, with no real information on the improvements, if there are any Start menu improvements, etc.. The release date appears to be late March, Early April as a free upgrade for users of Windows 8.1. Quote translated via Google Translate in Chrome.
Nevertheless, Microsoft has decided to release it is a new release of Windows 8.1 RTM 2014 Update . final RTM build ( Windows 2014 Update 8.1 ) will be available in about three months, ie somewhere in March 2014 , and it will be publicly available from April 1, 2014 as a free upgrade for all users of Windows 8.1 . circulated update will be through Windows Update .