How new is that? Looks like a pretty great collection, and especially impressed with how well preserved so much of the uniforms are.
When I went (a long time ago) it wasn't there. If anyone does got to Kennesaw, I suggest you take Sam Watkins Company Aytch and go to the point of the USA attack and read Watkin's post about the battle. You can practically stand where he stood and see where the trenches were, where the USA troops were, and imagine the dead laying in the summer heat, giving rise to the truce to bury them. You can even see the entrance to the mine that Watkins referred to that US troops started after the battle.