I believe that same clean edit slipped up onto the BBC One website at one point, along with all the edits of Capes. From what was (accidentally) shown on the BBC One website, it seems the tape/disc/whatever has several versions of the ident, all with VT in front, followed by the clean one, which is what the regions must have.
This caught my eye so I though I load. At the beginning of BBC One Original British Drama trailer - 2012 there is a interesting sting. Is it a sign of what's to come?
Oh, I have not seen that before and the studio and graphics do match up. I not seen it on TV which made me wonder. But I think your right. It's a Olympics thing.