No, but people including me have been having delays when starting games. For example, before the update when I used to boot up my WiiU and start NSMBU, ther would be a delay of about 5-10 seconds during which the OS basically froze and it did nothing. After that time, the NSMBU starting screen finally came up.
Now when I click on the NSMBU icon, it takes 1 second max before the starting screens appears.
Yeah. Also the "Please Wait" when you return to the menu and have a disc in. That too is gone.