If it's not that different, people will likely dislike it more than like it if it changes their 'workflow'. Like going to a supermarket only to find they've rearranged it and now you don't know where anything is. OIf the changes bring benefits, people will adapt and see them. But if they are just changes and don't bring anything meaningful with the change, we'll likely just be annoyed at a pointless change. I have many complaints about PS4's UI as Sony made random, pointless changes to the interface everyone was familiar with on PS3, which has just made me less efficient in navigating it.