BlackBerry (BBRY) failed to give specific details at its press event last week regarding the future availability of its new smartphones in the United States. The flagship BlackBerry Z10 smartphone launched in the United Kingdom last Friday, and is scheduled to be released in the coming weeks in Canada and the United Arab Emirates. The company vaguely announced that the device will be available in the U.S. sometime in March. According to a leaked roadmap obtained by TmoNews, the BlackBerry Z10 may launch on T-Mobile on March 27th. As for pricing, Verizon (VZ) previously announced that the smartphone will be offered for $199 with a new two-year agreement. Interestingly enough, the document also suggests that T-Mobile will launch a Galaxy S III smartphone with LTE capabilities on March 27th or April 3rd. The purported roadmap follows below.