When Britney Spears made a comeback last year with 2007's Blackout album, she didn't attempted any marketing strategies, she didn't tour, didn't do any interviews and didn't really promote the album beyond appearing in a few videos.
According to E! Online, the singer, who said last month that she planned to hit the road to support the release of her upcoming Circus album, has signed an exclusive tour deal with major concert promoter AEG Live to produce her new stage show. Date of an official announcement is still not revealed. However, Spears revealed during an interview with New York radio station Z100 in late September that she's hoping for a worldwide tour, not something limited just to the U.S.