I occasionally check the forums at VRS Simulations, about the release of TACPACK. I prepaid for the software in Feb. 2011.
From what I can discern from the posts, they are going to release a "beta" before the final product? Timeframe for that is still not known. Folks on the forum are placing "bets" as to the date.
I'm sure that TACPACK will be everything they promise it will be....but I will never again "pre-pay" for anything...that's for sure.