A week ago we showed a a very blurry video of what was claimed to be Windows Phone 8.1, complete with a notification centre and interactive live tiles.
At the time we were rather sceptical, and I think MyNokiaBlog has managed to place the final nail into the coffin of the idea.
It appears in all likelihood what we saw was an app, Future Lockscreen by Ronca, which does a pretty good job of simulating a somewhat more advanced Windows Phone user interface.
Do our readers agree the mystery has been solved? Let us know below.
See the original video after the break.