Doctor Who will be taking the Tardis to the world of 3D for the 50th Anniversary episode on November 23rd.
The BBC announced the news that the Doctor Who 50th Anniversary will not only be shown in 3D on its HD channel, but cinemas as well.
Whether that means UK-audiences-only for the movie theater screening is unknown, and regarding when and what time is unclear at the moment as well.
Obviously, a majority of people don't have 3D-capable TV's, so a "movie" screening at 3D theaters would be the way to go, hopefully the same time the episode airs.
The Guardian does report that it's being described as a "national event" - on par with the Queen's birthday - so the UK-only movie theater viewing seems likely.
Doctor Who showrunner Steven Moffat also offered the following, "It's about time. Technology has finally caught up with Doctor Who and your television is now bigger on the inside. A whole new dimension of adventure for the Doctor to explore."
Current rumors and spoilers for the Doctor Who 50th Anniversary suggest the return of all the Doctors in one form or another with Alex Kingston's character, River Song, the Doctor's wife, thought to be the reason they all come together.