A new trailer for the fourth season of The Sarah Jane Adventures has been posted online. Premiering this month, the season includes the story Death of the Doctor, which unites Sarah with fellow companion Jo Grant and the Eleventh Doctor.

The story will also tackle how many times the Doctor can regenerate, something hinted at by Steven Moffat earlier in the year. A teaser for the story reveals "The Doctor doesn’t have to be white. And he can regenerate more than 12 times -- a lot more!", overturning the previous 13 lives limit of the classic series.

In other news:

According to Steven Moffat in Doctor Who: The Brilliant Book, we have not seen the last of the gold Daleks, and that the new colored Daleks are an "officer class". The book also includes a list of 41 teasers for Season 6 that you can read HERE.

Author Neil Gaiman, writer of Episode 3, dropped a cryptic hint that the character Idris in his story "may be an old friend of the Doctor's with a new face." Wonder who it could be...