It is that time of the year when Xiaomi announces its new wristband. Last early summer we saw the Mi Band 3 and now the company has scheduled a launch for the successor, called Mi Band 4. The event will take place on June 11 and we expect the product to be the first in the family with a color display. Official invitation The Xiaomi Mi Band 4 is being launched first in China but should hit other markets across the world in the following month or two. Expectations are for two devices - one with NFC for contactless payments, and another without the chip and a lower price tag. The...