I'm avoiding them. I'd rather enjoy the show when it airs.
From the teasers they are showing they may be going old school and taking him slightly Valiard (an evil future doctor)
The Davros teaser was curious.
Wait... there's another evil Doctor other than the John Hurt 'evil' one? Wow....I've only watched since 2005 and had never heard of Valiard. That opens up an industrial can of worms.
Yeah, even some of the Steven "I wish people wouldn't post spoilers" Moffat posts contain more spoilers than I would prefer at times. I guess sometimes the only way is to cut oneself off from the net. And cable. Too great of feat is that.