Had Sky Q installed this morning and when the engineer was going through it all he said I should use the remote to get used to it and he would tell me what to do. Anyway, as I was going through the menus, in the Boxset sub menu there was a Ultra HD option with 2 box sets in there. The engineer was amazed and said he'd never seen it before, and promptly took a picture on his iPad. Unfortunately I don't have a 4K to yet so didn't even click on them, but I also took a picture. So, I went back to work and came home tonight and the Ultra HD menu has gone. Makes me think something is eminent. (The box sets were The Blacklist and Richard Hammonds Jungle quest by the way, not sure how to upload a picture of it)
Engineer checked my software settings but said they were what he'd expected to see so had no idea where it came from.