Perhaps, but we don't know if Apple wasn't already planning some UI changes in iOS 7 even before Ive got the software job, and we don't know if some of Ives ideas had already been prototyped and hashed out before he got the job as well.
We also don't know that Sir J would actually change anything in the UI to any major device. Outside of perhaps dumping the skeuo shadow nonsense that serves no real purpose and using that time to properly debug the software.
Just because someone new is in charge doesn't equal a full overhaul of everything