Finally, after much anticipation and much talk of this and that, RIM’s BlackBerry PlayBook has gone officially available. This dual-core tablet with the new BlackBerry Tablet OS by QNX is now available across the US and Canada. Yes, basic productivity apps like native email and calendar aren’t yet available, Android app compatibility hasn’t yet been rolled out, and the PlayBook has an unfavorable dependency on having a BlackBerry smartphone nearby in order to be the best tablet it can be. But will that stop people from getting one? The PlayBook is now yours for $500 for the 16GB model, $600 for the 32GB version, or $700 for the 64GB-equipped top option.