Windows 8.1 Update 1 may be headed for a March 2014 release and could include some under-the-hood changes to reduce memory and disk space requirements for cheaper tablets



From All About Microsoft:

First up, the target release date for Windows 8.1 Update 1 -- the relatively minor update coming to Windows 8.1 this spring -- is allegedly March 11, according to one of my accurate and trusted sources. Yes, that's a Patch Tuesday. Given that Microsoft will likely deliver Update 1 to Windows 8.1 users via Windows Update, this seems pretty believable to me.

Windows leaker WZor previously indicated that Windows 8.1 Update 1 would likely be released to manufacturing in March, but didn't provide a specific date.

  Microsoft's Windows 8.1 Update 1: Rumored release target is March 11