Remember this little teaser video from the BBC that was uploaded on 4 July 2013? This one right here:
Well, it's now been followed by a second teaser video which gives more of hint as to what we might expect:
Okay, so it says "Terror of the Zygons" - which is due to be released on dvd on 30 September 2013. But - the case is slimmer than usual - and the cover art is completely different to previous releases.
I'm wondering, therefore, if there might just be some kind of epic 4th Doctor dvd boxset on the way - one that contains his entire era of stories. Now - wouldn't THAT be something?