Meizu has finally rolled out Android 7.0/7.1 Nougat based Flyme 18.104.22.168 Developer ROM for a bunch of Meizu devices. These lucky devices getting mixed Android 7.0/7.1 Nougat upgrade are, Meizu Pro 6, Pro 6 Plus, Pro 6s, Pro 5, Meizu MX6, M3E, MAX, M5 Note and Meizu M3 Note.
Other Meizu phone including Meizu MX5, MX4, MX4 Pro, MX, U20, U10, M5S, M5, M3, M3S and M2 are also getting Flyme 22.214.171.124 upgrade but the firmware is based on Android 6.0 Marshmallow. The Flyme 126.96.36.199 ROM brings multiple new features, redesigned interface and tweaks like improved speed in system update and app installation.
Flyme OS 188.8.131.52 Developer ROM for Meizu devices
If you own one of the above mentioned devices then you are going to get the update anytime soon, also note that the Flyme OS 184.108.40.206 is a beta update so you might expect some bugs in the firmware. The stable update will be released later.