Not quite, Lucifer is not attacking the Kindred. But Decius (who I added in an edit to when I introduced Lucifer) IS going to attack. It is a two part plan. Lucifer is the "good" Paradox. He is "loyal" to the king (hence the maroon lights coming out of the cube-- they are less evil than say red.)
Decius, however, is part of the "evil" Paradox. "Loyal" to the rebels (which is why they will have red light son their uniform-- and be called a knock of organization by Lucifer). When the Burst Hearts are being transported out of the city (probably by either armored tanks or a helicopter), that is when Decius strikes.
See, Paradox cant openly betray the King or the Rebels, lest the lose the cash flow. So that is why Don created two branches, both led by him, but seperate from each other.
Paradox is basically just a bunch of Mercanaries. But each faction is more loyal to one side (as explained above). Though like all mercanaries, they are not 100% loyal to who they fight for