Why should we? Chips and drivers are constantly changing and improving technology. We follow these developments in the market and implement improvements as soon as they are relevant enough. But there is no real technical innovation in the heatsink, a piece of aluminum. The thermal properties of aluminum have not changed significantly since it was discovered 200 years ago. Our heatsinks are more massive than most competitors and the design has received mostly positive feedback. So why change this part of the product? The only incentive would have been purely for marketing reasons - a new product has to look new! But that would have added costs that would ultimately have been borne by the customer. And we trust that our customers will recognize the essential features.