On Asylum of the Daleks:
“This is an epic Dalek adventure that kicks off the new series in explosive style! If you think you know all there is to know about the Daleks, think again… [The episode will feature] every kind of Dalek ever faced by the Time Lord – including the legendary Special Weapons Dalek.”
Now my relationship with Doctor Who doesn’t exactly go back all 50 years, so I’m not sure what it means that there’s a legendary “Special Weapons Dalek,” but on the other hand that’s definitely something you want to have in your back pocket when you’re in a place called the “Asylum of the Daleks.”
For other series 7 spoilers, or at least the ones that have been pieced together so far, Screenrant has the complete breakdown:
This season will consist of 14 episodes split between Autumn 2012 and Spring 2013.
The second episode of this season – partly set in ancient Egypt – will feature Queen Nefertiti and Mark Williams (Arthur Weasley in the Harry Potter films) as Rory’s dad.
The third episode will have a “Wild West” theme.
Episode five will partially be set in Manhattan and feature the return of the Weeping Angels and River Song (YES!), plus the “final” departure of Amy and Rory (NO!).
The series will break until Christmas.
The Christmas special will written by Moffat and feature the debut of The Doctor’s new companion played by Jenna-Louise Coleman. The new companion will be very different from previous companions and is “going to be a shock.“
The remaining episodes will air in spring 2013 and will contain the big 50th anniversary episode, which is still very hush-hush but is said to feature many familiar faces.
UNIT and the Ood will both appear this season.
Moffat has created new villains that he says are his “scariest yet.”
Confirmed guest stars include David Gyasi, Rupert Graves, David Bradley, Riann Steele (as Queen Nefertiti) in Episode 2, Ben Browder, Adrian Scarborough, Garrick Hagon, Steven Berkoff, Ruthie Henshall, Jemma Redgrave, Michael McShan, Dougray Scott, Jessica Raine, David Warner, and Liam Cunningham.
Moffat also teased: “If we did a UNIT story, would Martha [the Tenth Doctor's second companion] be there?”