Or where Galifrey should be. But knowing Steven Moffat he himself probably doesn't know where it is and is just going to make it up last minute but anyway...

I have a theory on where Galifrey could be:

Ok when the Doctor's saved Galifrey in the distance there was a misty cloud thing which (in my opinion) looked somewhat similar to the crack in time. This cloud thing could also be seen in "Death in Heaven" when the Doctor opened the Tardis doors to see an empty space where Galifrey once was.

This misty cloud thing looks a little bit like (again in my opinion) to the entrance to the 'bubble' universe seen in "The Doctor's Wife". Now I remember at the time of watching that episode that entrance looked similar to the crack in time. It is also strange how inside that 'bubble' universe was a Graveyard of Tardis's.

Oh by the way did we ever find out who House was and why/how he was able to kill hundreds of Timelords and Tardis's?

Not saying my theory is correct but it is possible. Maybe Moffat will read this and steal my idea (which I don't mind because his idea's don't work for me most of the time)

I don't remember what the scene looked like, but if there is a cloud (A gas cloud? A vapourised planet or Dalek army? The constellation of Kasterborous?) then it stands to reason that it's there when the Doctor goes back to look, as it's in the same location.

Very late to the game, and not having kept up to date with all the theories and speculations, so sorry if this has been proposed already (which it probably has

Gallifrey is exactly where it has always been (hence Missy giving those co-ordinates) but, as with the planets stolen by Davros and the New Dalek Empire in The Stolen Earth, they are out of temporal synchronisation with the rest of the Universe. However, assuming that Doctor 12 would have remembered this and recalibrated scanners accordingly, I suggest that they are outside of time altogether, rather than just 1 second.

Apologies if this has been asked but I've only just thought about it.

How did Missey (The Master) know Gallifrey had been saved and in a parallel dimension? I know that John Simm's Master went after the Timelords in The End Of Time, but we know next to nothing if he escaped.

Could be as simple as overhearing The Doctor's plan to the war council and being in a position to flee the final battle. After all, the Time Lock no longer holds.

Not to mention her ability to spy on The Doctor with an iPad. Suppose that helps

I think that was probably the reason the Doctor took her word for it. If Missy/Master was trapped on Gallifrey prior to it being sucked into the 'art'(*), and she got out, then it stands to reason she knows where it is, or at least how it can be accessed.

(*) at the start of Day of the Doctor, the Gallifreyan general comments on how the plans of the High Council have already failed, suggesting that the Master and Rassilon are back on Gallifrey at that point.

There's a reason Clara's been kept on for another season. It certainly won't be character development.

So I imagine she is the portal to where Gallifrey has been hidden. Its probably all linked to when she stepped inside the Doctor's timeline or something complicated like that.

Gallifrey has been shrunk and has been spending the last 12 months traversing The Doctor's laundry basket.

Its second star to the right and straight on till morning !

That makes a weird kind of sense. I wonder if Moffat will let us know...

Probably turn out she IS Gallifrey

Never! (land)