I am adding more links to this post as issues and tips appear online
Windows 8.1 was available for download midnight in Australia on Oct 18th.
So what should you know?
This is a major update to Windows 8 and fixes some of the annoyances with Windows 8.
The update size is about 3.5GB
My favourite fix is being able to boot to the desktop however I also happen to like the tiled desktop.
Here is a collection of some tips to help you and remember take your time and read the instructions as in some cases you may have to install your software and apps again.
Windows 8.1 Upgrade Step By Step
Windows 8.1 Electronic Upgrade Options