One can glean a little of what the new TARDIS interior will look like through these shots taken on location while shooting at the Llanwonno Church today (21 October 2009) for upcoming Doctor Who story starring Matt Smith. The photos taken by "Scootyboy" are available on his Photobucket page here (slight spoiler warnings).
The Sun and Daily Mail (among other tabloids we imagine) have additional photos of Matt Smith (as the 11th Doctor) and Karen Gilan (companion Amy Pond) shooting the new Doctor Who series set to appear on BBC One in spring 2010. The photos in The Sun also reveal a bit of a spoiler, which we will not mention here. The redesigned TARDIS exterior reflects back to the early days of the series. Notice the return of the St. John Ambulance Cross emblem to the right door.
The Daily Mail includes a photo which reveals that the Doctor's new costume also include braces (suspenders), perhaps another nod to the Troughton era.
For the referenced photos and articles see:
BBC News has posted an article along with the first published photograph of Matt Smith in his new threads that he is wearing as the 11th Doctor.
Shooting of the new series began today, Monday in Cardiff. In this photograph (see below for large photo) of Matt Smith along with new companion, Amy Pond played by Karen Gilan can be seen wearing dark rolled up trousers, tweed jacket and bow tie, along with black shoe-laced boots.
The new series slated to debut in the spring 2010 features Matt Smith as the Doctor taking over the role after David Tennant (whose term as the Doctor comes to an end later of this year). It also features Steven Moffat as the new Executive Producer and Lead Writer for the series, taking over after Russell T Davies completes his term ending at the close of this year with the last of the specials.