According to the Meizu Italian blog, Meizu MX4 will be released with Ubuntu Touch and Flyme 4.0 (an Android 4.4.4 fork) in dual boot and will become available starting with December 2014.
Meizu MX4 is already available with Flyme 4.0 (an Android 4.4.4 derivative) and an 5.3-inch FullHD display with an 1920 x 1152 resolution and Gorilla Glass 3 protection, a MediaTek 6595 octa-core 1.7/2.2 GHz, a PowerVR G6200 GPU, 3 GB of RAM memory, 16/32/64 internal storage, a 20.7 MPX rear camera with 5248 х 3936 pixels, autofocus and LED flash and a 2 MPX front camera, 3100 mAh, WiFi 802.11 a/b/g/n/ac, Bluetooth 4.0, NFC and GPS.
The story so far:
Canonical has been working a lot at Ubuntu Touch, the mobile version of Ubuntu. While the initial plan was to make it available for all the Google Nexus smartphones and tablets, the developers have dropped the support for Galaxy Nexus, Google Nexus 7 2012 and Google Nexus 10, Ubuntu Touch, now based on Ubuntu 14.10, being officially available only for the Google Nexus 4 smartphone and the Google Nexus 7 2013 tablet. (Nexus 5 is not yet support by Ubuntu Touch.) The first Ubuntu Touch powered phones are scheduled to be released this year, in Europe by BQ and on the Chinese market by Meizu, one Asia’s leading smartphone manufacturers.
For now, the Canonical developers are focusing a lot on getting the RTM (release for manufacturing) branch of Ubuntu Touch stable enough for daily usage.