We tested it but only one round, yesterday. I've missed a bit the new elements, but other players noticed them ^^
Can't say much because the BLU team couldn't get the first cap point at all... The first zone is ok, even if still sniper prone (but players keeps forgetting about the side passage, blame them). The issue was after the first turn, where all attackers where wharmly welcomed with heavy machinegun, scoped fired, rockets and stikies. They did ask for some side passage as well. Of course there is the upper way and the lower one, but they felt lacking cover. As a defenders, I stayed in this zone, often rocket jumping in the upper passageway to kill incoming BLU.
Of course this was only a one round trial, so it's too early to draw conclusions.