Yes and No. I guarantee you that the US has had these "plans", so to speak, since Akmadinijad had attracted the attention of the NSA and CIA. I can also say with confidence that there are the same type of "plans" that have been drawn up for North Korea, Venezeuala, and every other nation viewed by the US intelligence service as a potential threat. Think of them as a pre-made battleplan for use only if worst comes to worst and we get into war with Iran. As for it meaning a imminent attack, no; they are only precautionary.