Here's some extra information about Windows 8.1 Update:
Before we get ahead of ourselves, let's cover a few heads-up/FAQ comments:
It will likely change your system's current behavior: For starters, unless the device is a tablet, a system with this update will boot to the desktop by default You can still choose one way or another but I was surprised when I rebooted and was taken to my desktop instead of my Start screen See the chart further down in the post for a clear list of what default settings are changed and how It does NOT include the Start menu that you may have seen/heard about at the recent Build conference. That is some exciting near-future stuff, which demonstrates our on-going commitment to deliver on customer feedback (such as your comments on this very blog) It is defined as an "Important – Security update" in our Windows Updates framework It is a cumulative update to Windows 8.1 that includes all previously released security and non-security updates It is a required update to keep your Windows 8.1 device current Failure to install this Update will prevent Windows Update from patching your system with any future updates starting with Updates released in May 2014 (get busy!) Windows 8.1 is a prerequisite (vs Windows 8 RTM) Windows 8.1 media/WIMs/TechNet ISOs/Store bits/etc will be slipstreamed with this Update in the near term KB2919442 is a pre-requisite update - released in March 2014 – you'll need this before 2919355 will be recognized