One thing that I noticed is although you can now move apps from internal storage to the SD card (and back):
A) A few widgets disappear if you do do. I just moved the app back to internal storage to fix that.
B) All apps that are "moved" to the SD card still leave a stub in internal storage. In some cases, this increases the total amount of storage used by the app when you add up the internal and SD card locations.
C) The only way that an app's data can be moved to the SD card is if there is an option to do so under the in-app settings.
D) The Samsung and other built-in apps cannot be moved.
All in all a nice improvement.