RIM's plan is to release PlayBook OS 2.0 for its tablets, then later release BBX for both PlayBook tablets and BlackBerry smartphones, though it gave no specific timeline. It also has not said whether any current BlackBerry smartphones will run the BBX operating system when it becomes available.
RIM's previous promises of future compatibility have not always been honored. In July 2010, RIM announced that its then-imminent BlackBerry OS 6.0 would run on then-current BlackBerrys, but it later changed its plans, restricting BlackBerry OS 6.0 to devices released in fall 2010 and winter 2011. In September 2011, it released BlackBerry OS 7.0, which had been previously named BlackBerry OS 6.1, and said it would run only on new BlackBerry models released in fall 2011 and later.
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