China will be getting an upgraded version of the Redmi 4 - Redmi 4X - with Snapdragon 435 chip and faster LTE speeds. Today Xiaomi's may have focused the spotlight on its first homebrew chipset - the Surge S1 - and the Mi 5C, but the manufacturer had one more announcement before calling it a day. Xiaomi used its official Weibo account to introduce the Xiaomi Redmi 4X for the Chinese market. The Redmi 4X looks identical to the Redmi 4, has the same 5" 720p display, but comes with a newer Snapdragon 435 chipset (Redmi 4 has S430). There is the same octa-core 1.4GHz A53 processor...
Source: http://www.gsmarena.com/xiaomi_unveils_redmi_4x_with_faster_lte_snapdragon_435-news-23702.php