The official public release of the Windows 8.1 Update 1, also known as Spring 2014 update, is set for April 8th. But, you can install it today since the long awaited update with an important feature pack included is available for download.
Early adopters can obtain a copy of the package via various websites and file services. One of them is via Mega.co.nz. There are 32-bit and 64-bit versions, as well as one for ARM-based devices, such as Microsoft Surface 2.
I’ve personally downloaded it for my laptop with 64-bit Win 8.1. The installation went smooth and finished without an error.
When you go to one of the links above, Mega website will ask you to log-in or register in order to access the files. The 32-bit (x86) version is about 300GB large, while the 64-bit weighs nearly 800MB.
The downloaded .zip file contained six .msu files. You’ll have to click and install each of them. The largest file among them should be installed the last. After you install it, the system will require a reboot and when you log-in to your updated Windows 8.1 you’ll get the expected features of the refreshed OS.
Those who don’t want to bother to get the Update manually can wait for the official release, which will be available though the Windows Update service within the OS.