It finally happened - today, on the 57th birthday of Steve Ballmer - the major update to Windows 8, "Windows Blue" has leaked on the internet. The leaked ISO is the installation image for 32-bit systems. The system includes numerous changes related primarily to Modern UI and Modern Apps in the OS.
The file name of the leaked image is 9364.0.FBL_PARTNER_OUT13.130315-2105_X86FRE_CLIENT. As is obvious from the build tag, it was compiled on March 15, 2013 and has been designed exclusively for Microsoft's partners. The size of the ISO image is 2.63 GB.
The main changes are as follows: