It is rumoured to start on the 13th March 2010.
Others say it starts on April 3rd.
Matt Smith plays the Eleventh Doctor in Series 5
Series 6 is expected to be shown sometime in Spring of 2011.
9/8/12
David Tennant will continue as The Doctor for the several specials which will be shown during the 2009 period. Matt Smith began filming as The Doctor on 28th July for series 5, which will air in 2010.
No Jack is not in series 5.
series 5
February
No she was not in series 5.
Series 5 on TV just ended. No date yet for TV series 6 Sorry, but no info for series 5 on DVD
No one knows if she'll return for series 5 or not.
Series five of Doctor Who will be a 'dark fairytale' according to showrunner Steven Moffat.
now