Here are some collected tidbits (with as little unofficial stuff as possible) on Series 6 of Doctor Who. I don't think I've ever so looked forward to a TV series. It's such a well written and played out show, it's worth a watch if you are a non-viewer.
Here is an official trailer from BBC One.
Here is a little prequel from series head Steven Moffat.
Here is the full length official trailer for Series 6 from BBC America.
Here's some non offical material with news on Series 6 with Steven Moffat.
Matt Smith (aka The Doctor) on Episodes 1 and 2 of Series 6.
The Doctor Who Insider on Series 6.
My favorite companion, Karen Gillan (aka Amy Pond), on Series 6.