When does the come on? Is it in the finale or the episodes before the two finale episodes?

apparently the last episodes....

but i thought it was all just speculation atm

I bet it is. I hope the finale is really huge like the Series 4 finale (although Journey's End was disapointing, Stolen Earth was great). I hope they use the 'grandist' and 'film like' music they got in the finale too like in the Series 4 finale episodes.

In an interview Moffat said that they had decided to go really big with this year's series finale i.e. trying to out-do RTD's 'everything and the kitchen sink' approach.

Steven said this year is probably the biggest finale yet but he also said that next years will be on a smaller scale.

Doctorellis - not been speculation for a long time, they were in pre-season trailers

Maybe the 10/11th eps? I don't remember images from the finales being
show in previous Nu-Who pre-season previews (No
images from AOG/DD appearing in the S2 trailers, for
instance).

I read in another thread that it's in tonight's episode

Don't know if there is much truth in it

Amy's outfit is the same (or at least very similar eg red scarf) in tonights episode and in the Finale.

It's also the same outfit seen in the clips

So it's possible they do turn up tonight but I still think it will be the Finale.