Likely to delay, but the developers have actually been relatively active recently and responding to threads. They say they are working on it.
I understand though, I personally find Sieges frustrating to watch at the moment. AI staring at the inner gate instead of attacking it, inability of AI climbing up Siege towers, AI on rails and generally unresponsive to what is happening during the Siege, large blobs standing on the walls, large blobs standing at the base of ladders/towers, attacking AI archers standing in fat blobs instead of spacing out and getting pwned by enemy siege weapons, no inner city fighting, no fight in the lords chambers/castle, archers just standing on the fortifications and not firing. Pretty barebones and very disappointing.