Zalman has a new northbridge heatsink on their korean page, the ZM-NB47J.
You can see it here: http://www.zalman.co.kr/product/zm-nb47j.htm
Digit-life also has a new picture (and seems like they have a possible production model in testing) of the Sapphire Radeon 9600pro Ultimate (passive cooling).
You can see that here: http://www.digit-life.com/news.html?1875#1875
We'll probably see both in the stores soon.
I'm quite sure the Sapphire heatsink is made by Zalman as well and we'll probably see it in stores separately by the end of this year with other new heatsinks for the CPU and HD.
The Sapphire heatsink looks quite nice. It's a lot smaller than the huge ZM80A-HP, hopefully it offers good performance too.