Meizu the one of Chinese smartphone manufacturer is ready to release Android 4.4 update to their Meizu MX2 and MX3 Android smartphone, this two devices will get Android KitKat on April 28th.
For your information, the MX2 smartphone was introduce in late 2013, while the M3 is the current flaghsip smartphone. But Meizu has promise that the devices is upgradeable to KitKat and now this is the time.
Meizu is has always offers a nice Android phones with FlyMe uer interface, and now they also ready to release the Ubuntu-based smartphone in the near future. [source]