The problem is they still far from finishing the game and by releasing another DLC means they intentionally making this game got delayed again. It's better if they finished the game 1st then adding DLC later to make sure they did not stray from their schedule right now. If they released another DLC especially on Christmas or New Year, I wont support them anymore.
Don't delay the schedule for finishing game, DLC can be added later as soon as you finished it. This is the main rule of making projects/games on any company, you failed to do so, you will ruin yourself.