We dont know these number until which date. I think it should be until first/second week of november so it will complete 1 year. Sony said fastest selling console of all time, so what was the highest numbers for first year before we can guess PS4 is above that.
Doesn't matter to me what date it's from since it's not a milestone number anyway. When the PS4 hits 15m sold-through I'm sure Sony will make an official announcement.