Promo footage screened on 66 landmark buildings across the globe
Rapper rants about his celebrity at Adult Swim party
Travi$ Scott has heard rapper's new LP and says it's 'next-level' stuff
Source says 'X Factor' judge has lofty ambitions to work with rapper
Scottish producer has worked with West on upcoming album
Rapper lets rip a torrent of expletives at paparazzi
Rapper spotted filming fight scene alongside Tina Fey and Amy Poehler
The rapper performed the brand new song at the swanky fashion party in New York
The follow-up to 2010's 'My Beautiful Dark Twisted Fantasy' could be released next month
Rapper posts date on Twitter as fans begin to speculate