LG recently announced the X400 smart phone in its home market. According to yonhapnews.co.kr/, The X400 is the LG K10 2017 for South Korea Marke.
The LG X400/K10 2017 has three model variants, namely the K121L, K121S and K121K for three major carriers In the South Korea market.
The LG X400/K10 2017 was recently certified by the Bluetooth SIG. According to the Bluetooth SIG filing, the LG X400/K10 2017 for global market has following variants:
On the LG USA official website, Four devices carrying model number M255, M260, MP260 and TP260 were listed under X400 code name. It is safe to assume that the M255, M260, MP260 and TP260 are the new LG K10 for U.S. Market.
At the moment, we have not heard any news about the LG K10 from U.S. major carriers.