Nice to see they are improving Windows 8, but the problematic context switching between Modern interface and desktop appears to still stand, and that philosophy behind the OS will always make it a pass for businesses.
While the new "all apps" view option may please some people and make it a more bearable experience, pressing the returned Start button will still take you to the Modern interface, and with that, by not making the taskbar visible from the Start screen, you're still working within the same two desktop disruptive philosophy.
Let's just hope that the update is also available through Windows update and / or as a separate download and not only through the Windows Store like Tami Reller mentioned, I intend to use a local account and thus won't be playing along with the low move by Microsoft to try to lure people into the store. Make the update available without the need to log into Windows by using a Microsoft account.