Dennis, Jeff' s right.....you already have a heck of a nice bow there and you will not be gaining enough of a difference in performance or forgiveness to warrant a change right now.
I too would probably just wait until the 04' s are out as well if I were you.

That said I own the DC Pat and just sold my Red target Pro40 (3D season is over for me)
All around bow? The Pro40 Wins....it' s just a tad easier to shoot , and holds more solid on target. BUT the Pat Dually is no slouch either. I shot my first " Clean" 3D round with it this past season set up as a hunting bow!
Either bow is inherently pretty darn accurate, the Patriot is just a little more user friendly in hunting situations.
Your BKII is somewhere in the middle ATA wise, a similar to draw cycle, and not far behind the Pro40 Dually in brace height.........plus you are going to have the bow with the best performance of the 3, and probably a little smoother draw than the Patriot.

If you have a real bad case of the " New Toys" by all means go get one........they are both great bows. I am dying to get my Dually Patriot into the woods this upcoming weekend. As much as I absolutely LOVED my Pro40 Dually for 3D and how well it shot for me, I would still pick the Patriot dually for hunting bow. Unless I was living in Wyoming or somewhere wide open with ground hunting opportunities........then I' d lean toward the Pro40 Dually.