An image of the Redmi X handset has been posted, the word Redmi X clearly mentioned and you can also see how the handset looks like. Now this is rumored nothing official about it yet.
If you may recall Manu Jain (Mi India) tweeted that they will launch a new handset with the new Snapdragon presumably the 730 chipset, in India. I am not sure if this so called Redmi X will be launched in India, or Redmi is planning to get this in India.
Looking at the leaked image of Redmi X it has a popup selife camera, triple cameras on the rear and there is no sensor on the back so probably the X will come with in-display finger print sensor.
Nothing official yet, all rumored.