Cheryl Tweedy?

Has Cheryl changed back to her maiden name of Tweedy? Apparently at this week's X Factor auditions in London, Simon introduced Cheryl by her former name.
Rumours have been circulating that Cheryl is planning to reissue her solo album as Cheryl Tweedy, is in the early stages of getting the 'Mrs C' tatoo removed from the nape of her neck and has asked close friends to start calling her Cheryl Tweedy, although her name is still legally Cheryl Cole.
It may be an opportune moment for her to change her name as she bids for world domination. Outside the UK, she's a relative unknown (Girls Aloud have tended to focus their attentions on the UK and Ireland only), with her album barely scraping into the top 50 in European markets, despite her gruelling promotional tour. She's also a relative unknown in the US - although she seems to be putting that right with the romantic rumours surrounding her 'friendships' with Will.i.am and Derek Hough.