Ok, there's not a new model from SWR. But, I ordered a new fan for my SWR SM-400S, and it is now THE BOMB. Well... more like the quiet. It's soft, low whisper doesn't have the high pitched whine of the old fan, and its probably half as loud. Most importantly, it cost me $15! Whoo hoo! I'm kinda proud, I'm usually not so resourceful. Anybody who has an SM400S should give this a shot if they're having fan noise trouble.