The BlackBerry Z10 (BBRY +1.4%) will hit AT&T store shelves on March 22, says Bloomberg - N4BB previously reported of a March 15 launch. Separately, Jefferies' Peter Misek, who upgraded shares on Jan. 18, says his checks indicate no Z10 inventory buildup, and that any price cuts are normal for a new smartphone. Pac Crest had reported different findings.