This is confusing, as it appears DeNoise AI is a replacement for AI Clear, which was new only a shot time ago. After using both, I think I prefer AI Clear as the results seem the same as DeNoise AI and the interface is easier.
Of course they also recently released Sharpen AI, but AI Clear also does sharpening.
Some of their recent releases seem to be integrated into Studio, but others are not. Or they are found in different menus of Studio.
The naming also is bizarrely inconsistent: DeNoise AI and Sharpen AI, but AI Clear and A.I. Gigapixel.
Also, their interface in inconsistent. For example, some products allow a split screen view of the before and after adjustment image. Others only have a button that switches between before and after (they all should probably offer both options).
Topaz seems to have no coherent strategy. I think most of their products are useful, but many overlap functionality and that makes it difficult to decide which you should buy. And the inconsistent interface, especially when it seems Studio is supposed to be the hub for all their new products, seem like just lazy design.