I thought it was official but am not 100% on that. All I have heard reported anywhere is "Coach Jay Graham the only one retained" and even reports about Kentucky (meaning he almost assuredly interviewed). Not that it couldn't be reversed and him rehired, but st this moment I think he is gone.
There has been some rumbles he may be waiting on this situation to be resolved. Not sure it's true or not. The big question is has he been hired officially??