I have good news for all xposed lovers, Huawei Mate 8 Xposed framework for nougat is now available and tested by me. The version i am going to share with you is systemless version, it means you can install xposed framework without making changes in your system partition.

How to install Xposed Farmework:

• Backup all your important data
• Your phone should be rooted (How to root?)
• Download and install Xposed installer apk from THIS LINK
• Once phone rooted, open magisk manager.
• Then from menu tap on download and search for Xposed, and download SDK24 version, as show in image below
• 
• Just download it, don’t install it.
• Then go in files manager , find magisk manager folder, and copy Xposed_framework(SDK_24) zip file to your sd card. (you can not use internal storage)
• Then boot to TWRP and tap on install ,tap on select storage , choose external_sd
• Now search the Xposed framework zip file and swipe to install
• Done, now reboot and you will see xposed has been install.

Video Guide

Source: XDA