Congratulations and welcome to the board!!
The '06 is supposedly bringing a slight face-lift, color-painted bumpers, and some interior upgrades. If this is important to you, then wait three or four weeks until the '06 comes out. If not, you'll love the '05. My wife has an '05, 3.0L with premium package, pano roof, and auto. The car is VERY agile, and VERY quick. My wife loves it! I really don't think you'll be disappointed either way.
Good luck, keep us posted on what you decide, and take (and share with us) some pics! Again, welcome!
Juan