User blog comment:MasterCharmander13/Doctor Who Adventures Season 6 Opener Hints and Teasers Blog/@comment-19366571-20160115153129

1) Already? Is the series really that bad? Probably a Tetra lines.

2) Some showing off from the Doctor, me thinks.

3) A returning character? Someone from Castela?

4) Aliens are real. Very real.

5) Dumb humans, Doctorish line, we are on Earth. Do they not believe that aliens are real?

6) A dark twist in the story, perhaps some sort of sacrifice to kill one to save a billion type scenerio?

7) Impa limpa impaly do, I got a brand new DWA story for you. Couldn't resist :P.

8) No one has escaped from here. Ever. Sounds like it could be a story where the aliens take the Doctor and co and some Humans prisoner and the Doctor will do a very bad act which may kill some aliens but save the Earth.