We have been hearing from a few sources about a March 28th date for the BlackBerry Z10 launch on Verizon. Its tricky since there are a few other dates floating around with preordering, channel delivery, and business orders. BBOS also got a tip for the March 28th with a preorder date of March 21st. Take this all with a grain of salt since this has yet to become official. Still its nice to see the US launch clearing up.