Watch out as there is already news of an upgraded version of the Lenovo Vibe X2. Not only is its model number (according to its entry at the Ministry of Industry and Information Technology’s website) “Lenovo X2Pt5,” it also has the same design style as the original Lenovo Vibe X2.
Recently, the Lenovo X2Pt5 received its networking license. From the photos, you can see that the Lenovo X2Pt5 is thinner, with a thickness of only 6.8mm. Its width is only 71mm while its length is about 146.3mm.
The connectivity specifications have also been upgraded. The upgraded version of the Lenovo Vibe X2 supports TD-LTE, WCDMA, TD-SCDMA, GSM, and FDD-LTE. The Lenovo X2Pt5 also uses a 1.5GHz octa-core CPU and has 2GB RAM, 16GB ROM, and a 13mp camera. It runs the Android 4.44 OS. [source]