Series 7: New Companion Full Name Revealed?

The Daily Mirror is claiming to have details on the Doctor's new companion, played by Jenna Louise Coleman. In the past, the Daily Mirror has proved to be both wrong and right about Doctor Who rumours so these might be true, they might not.

They say:

The new Doctor Who companion will be known as Clara Oswin, the Mirror can reveal.
Insiders on the show say Clara is more than a match for the Timelord and is a computer whizz who is feisty and flirty.
One of her opening lines to the Timelord is: “Rescue me boy and show me the stars.”
She will initially be referred to simply as Oswin by the Timelord and is played by Jenna-Louise Coleman.

This doesn't sound too far fetched and the Doctor calling his companion by their last name, certainly isn't new. But of course, these are just rumours...