Some months ago DongJin Koh, President of the Mobile Communication Business at Samsung Electronics confirmed that Samsung is working on foldable phone and they plan to launch it in 2018. After some time Samsung had to verify this plan and yesterday DongJin officially confirmed that they had to delay premiere of foldable phone to 2019.
According to the newest reports company plans to develop foldable displays till March, and mass production of this device will be started in the fourth quarter of year (probably in November). Naturally we don't know how will look this phone, but it's said that it may have 7,3-inch flexible OLED display.