We are most excited about the quality improvements in Android Studio 2.3 but you will find a small set of new features in this release that integrate into each phase of your development flow. When designing your app, take advantage of the updated WebP support for your app images plus check out the updated
ConstraintLayout library support and widget palette in the Layout
Editor. As you are developing, Android Studio has a new App Link Assistant which helps you build and have a consolidated view of your URIs in your app. While building and deploying your app, use the updated run buttons for a more intuitive and reliable Instant Run experience. Lastly, while testing your app with the Android Emulator, you now have proper copy & paste text support.
I hear a lot of negativity regarding Android Studio, but since I'm not a developer, I can't really make heads or tails of it. Is it really as bad as some people make it out to be?