Jay-Z joins Coldplay on their upcoming eight-track EP dubbed 'Prospekt's March.' The rap star will join Chris Martin and Co. on a new version of the song 'Lost' ... [Coldplay.com]

Queen Latifah will go toe-to-toe with Republican vice-presidential candidate Sarah Palin ... sort of ... [TMZ]

Usher rolls out dates for his 'One Night Stand: Ladies Only' tour that launches on November 2 in Atlantic City, N.J., wrapping November 25 in Dallas ... [Billboard]

According to his MySpace page, Saigon is working on his second album, 'Thank God,' and the MC isn't shy about how much he charges for "collabos" ... [MySpace]