Britney, Gaga, and Beyonce will smash as the holy trinity Gaga will lose steam and won't sell as much as TF.
No Doubt will put out an okay album. Adam Lambert will try and flop with no American idol hype and i'll cackle. Fiona will release her album, hopefully.
Christina will gain another 20-30
We will say goodbye to K$ or at least she will be less successful
Rih will continue to sell and chart high
Britney and Gaga will most likely dominate the charts (Gaga will probably have the best sales for the year)
Drake will sell big
Bruno will finally get big album sales?
Britney wont tour with the new album, and as a result will put more focus into promoting the album. She'll get those killer first week sales she's famous for, and she'll stick around for longer than she did with Blackout and Circus. She'll also sell more internationally than her last two albums did.
Britney will go multi-Platinum.
GaGa won't do as well as people are anticipating.
Kelly will once again be shat on by RCA.
Cheryl will make her U.S. music debut, but will flounder.
Ciara will once again take it back to her musical roots only to have a lackluster chart performance, but will perform her ass off on any televised appearance.