As announced on Google I/O, here is the Google’s new operating system which was earlier in developer preview mode with code name Android O.
Android O means Android Oreo and will be rolling out OTA for Pixel and Nexus 5x and Nexus 6P devices.
Android 8.0 brings new features like picture in picture and auto-fill and strong security enhancements which will make devices running on Android O faster as well as more secure.
Android O also support Android Instant Apps , this is a newly developed method for running apps without even installing on your device. Native Android apps can run on device instantly making it more faster. Read about Android 8.0 – O at official Android website.
Auto-Fill is somewhat like Password Manager which can remember your password and logins and form data which will make your login more faster and save your time.
Read about previous version of Android, Android N, Android Nougat,
Google has previously released version 7.0 on the very same day Google released Android Nougat.