The "Doctor Who" 50th Anniversary is kicking into high gear this weekend, and it seems the trailer previously shown at Comic-Con has been leaked early.

In this leaked "Doctor Who" 50th Anniversary trailer, fans can see the return of Rose Tyler, the popular companion for Christopher Eccleston and David Tennant.

Check out this leaked "Doctor Who" 50th Anniversary trailer below:

According to DoctorWhoTV, some portions of this leaked trailer is actually different from the Comic-Con trailer, with more CGI and a few interactions taken out.

In addition, it appears a "Doctor Who" 50th Anniversary minisode will be premiering November 16 on BBC's Red Button service.

"The 50th Anniversary features Matt Smith, David Tennant and a mysterious incarnation played by John Hurt. Only one appears in this mini episode, 'The Night of the Doctor.' But which?" says the program description.

Most "Doctor Who" fans are banking on John Hurt being the featured Doctor in the minisode, but rumors are also circulating that another Doctor may appear in this "Doctor Who" 50th Anniversary clip as well.

What do you think of all this "Doctor Who" 50th Anniversary news? What do you think of this trailer?