Has anyone said, it's a bridge? To me that lioks almist like a support ship docked.
Originally Posted by Valias
To be fair, bridges like that have been on Klingon cruisers since the very first D7, and the Vor'cha after it.
As Valias says, it fits previous Klingon ships for that to be a bridge, and it also fits the ideology of a Klingon that the Bridge be very visible and near the front of the ship. It isn't very honourable for the Captain to be cowering in the bowls of the ship.
As for it looking like a support ship - on the original Negh'Var plans, the triangular "mission pod" at the top-rear of the ship is said to be detachable scout ship, so its a fair assumption that the similar object on both the Vor'Cha and now this new variant are also detachable scout ships.