BlackBerry Milan slider said to be shelved due to hardware problem
suffered from hardware issues. Originally, the new BlackBerry 10 line of SuperPhones was to launch early this year, but because RIM is waiting on a new line of dual-core processors from Qualcomm, the launch has been delayed until late in the second half of 2012.
Another rumor passed along by BlackBerry OS states that none of the BlackBerry 10 devices have been made yet. The handsets are allegedly in engineering under New Product Introduction. The first of the new BlackBerry 10 line to roll out to the public will supposedly be the BlackBerry London aka Surfboard. Other BlackBerry 10 models that appeared on a roadmap for RIM include the BlackBerry Nevada and the BlackBerry Lisbon.
source: N4BB via BlackBerryOS, photo of BlackBerry Milan rendering courtesy of CrackBerry