I think the first problem with this is that you have been "told." I
basically say if you don't see anything that the BBC reports then it
is completely untrue. I personally haven't seen anything of the sort,
and I know if this comes about with me being a member of a local
Doctor Who fan club as well as lots of other fandom type stuff this
would have been HUGE news. :)
I do know that Doctor Who will continue to 2013, but there hasn't been
solid plans beyond that. I am pretty sure that the BBC don't want to
cut off their own arms and legs with this being a big money making
series unlike the last run which wasn't making a whole lot of money in
the late 80s. If you want to keep up with the latest news there is a
site that compiles a lot of news out there on the Doctor Who News Page
(
http://www.doctorwhonews.net/).
I don't want to spoil what has happened in the sixth series, but have
you seen any of these episodes? If not then you should watch it. :)
And I'll say to you is to keep calm and carry on! :)
Robert