What's new in the web Crypto API?

As a keen observer of the cryptocurrency and financial technology sector, I'm intrigued by the recent advancements in the web Crypto API. Could you elaborate on the most notable updates? Specifically, I'm interested in understanding the new features that have been introduced, how they improve the user experience, and their potential implications for security and privacy? Also, what kind of developments are expected in the future for this API? I'm keen to stay ahead of the curve and understand how these advancements could potentially shape the landscape of cryptocurrency transactions and financial services.