Android Studio 2.3 released with new App Link Assistant, copy & paste text support
The new Android Studio 2.3 focuses on improvements across the IDE. Among the features that have been updated in this release, Google mentions the WebP support for app images, as well as the ConstraintLayout library support and widget palette in the Layout Editor.
Furthermore, Google added a new App Link Assistant, which should help developers build and get a solid view of their URIs in their applications. Also, Android devs can now take advantage of the updated run buttons for a smoother Instant Run experience.
Last but not least, Google brings proper copy & paste text support for those who test their applications with the Android Emulator. This particular feature has been added back by popular demand, and it's now working with x86 Google API Emulator system images API Level 19 (Android 4.4 KitKat) and higher.
There are a lot more changes included in this release, such as the option to search for material icon wizard, instant run UI change, build cache and others, so make so to check the link below for in-depth details on Android Studio 2.3.
source: Android Developers