the features listed with the patch are DLC cultures/wonders, a series of AI-improvments and "Improved the usability of the Trade and Wondrous systems."

what does this one mean? is it piurey usability or does it change something about how trade works?

and what exactly is the wonderous system? i forget.

Wondrous bonus is when you build the Manufactory and gain the 5% per resource bonus.

But I also don't know what exactly they changed, numbers seem the same to me.

Maybe it's just the way the AI interacts with trading, or the UI.