Poco X2 confirms to be powers with 4500mAH battery with a 27W Turbo fast charging support. However, recently, the brand reveals screen refresh rate on Poco X2 will be 120Hz.
Therefore, it almost confirmed to be re-branded version of Redmi K30 4G model, which launched earlier in China. So far, Poco reveals a 120Hz screen refresh rate, side mounted fingerprint scanner, USB type-C port and today with 27W Turbo fast charging support.
All the above specs revealed so far, are completely matches with the Redmi K30 4G model. Also, Poco might be launch a Poco X2 Pro with a Redmi K30 5G model. However, Redmi will not launch Redmi K20 series upgrade instead it will be launched with Poco branding.