As of next weekend, UK viewers will be able to see a new Doctor Who minisode, The Night of the Doctor, via the BBC Red Button service.
It also appears to have been certificated by the BBFC and they list a running time of 6 minutes and 54 seconds so this would be the longest of these short episodes yet, I believe.
If it doesn't officially get released online I'm sure it will make its way there by "other means." It's inevitable, really.
There's been some confusion about another feature certificated by the BBFC called The Last Day, running 3 minutes and 57 seconds. The title suggests that it might have something to do with the Paul McGann story I told you back in July, but if this was going to be a regeneration minisode then I think the BBFC listing would have said so – it does in the case of Night of the Doctor – and also that it would roll out before The Day of the Doctor screens, and it's not looking right now as though it will.
But we'll see.