We cannot say advantages but introducing new features with Android P version as,
• Accurate indoor positioning with Wi-Fi RTT
• Fullscreen content [display cutout]
• Improved messaging notifications
• Multi-camera API
• ImageDecoder for bitmaps and drawables
• HDR VP9 Video, HEIF image compression, and Media APIs
• Data cost sensitivity in JobScheduler
• Neural Networks API 1.1
• Autofill improvements
• Open Mobile API for NFC payments and secure transactions
Know more in details here in the official Android Developers Blog:
https://android-developers.googleblog.com/2018/03/previewing-android-p.html