No, the suprise album gimmick won't work. She needs a mid tempo banger made by top writers and producers, a modern version of Glamorous. Something slightly nostalgic which shows off her vocals and critics will jïzz over, yet can still be played in the club and taken seriously by urban radio. Drop the song, video and the album release date in the same week. Then release the album 4 weeks later dropping some countdown tracks between then. Regardless she ain't gonna sell too well but it'll make her album release seem like a big event and her name will be in the press over a longer period. If you can't sell the music, sell your name/brand!