No. There was a bit of a scaremongering rumour around for a little while, but they've since confirmed that Matt Smith is sticking around at least until the 50th anniversary in 2013.
Ell even dies but he doesn't regenerate he regenerates in the last episode in the 5 series
The Doctor's companions in Series 6 are Amy Pond, and Rory Williams.
Doctor Who series 6 will start on the 23rd April 2011, with 'The Impossible Astronaut' :)
The eighth Doctor regenerated offscreen and nothing is known about how or why he regenerated. The eighth Doctor appeared onscreen only once in a TV movie. We know th Time War happened between the TV movie and the start of the 2005 series. It's widely assumed that whatever the Doctor did to end the Time War caused him to regenerate.
He will regenerate into the 12th Doctor.
2011.
Series 6 is expected to be shown sometime in Spring of 2011.
He'll regenerate into the 13th Doctor.
Steven Moffat confirmed in Doctor Who Confidential that River would be in series 6, and that we will find out who she is.
The fourth Doctor fell off a bridge.
Eventually yes, he will regenerate into the twelfth Doctor.
Doctor Who series 6 returned with the second half on August 27, 2011.