Samsung seems to be planning to unveil its first foldable smartphone at the Galaxy Unpacked event on February 20, the company has hinted in a press release. The company on Sunday issued a press release in South Korea to mark the placement of two Galaxy Unpacked event banners, written in Hangul, in Place de la Concorde of Paris. Hangul is the Korean alphabet and the company notes it is the first time that it is using Hangul for outdoor advertising.
The Samsung Galaxy Unpacked event, the use of “Unfolding the future” phrase to publicise the event is a pretty good indication that we will see the phone on February 20 (February 21 in some time zones).

Samsung Galaxy Unpacked 2019 banner in Place de la Concorde, Paris
Photo Credit: Samsung
This lines up with a recent the Wall Street Journal Galaxy S10 phones at the event.
Apart from giving attendees a quick glance at a disguised Galaxy F at the Samsung Developer Conference in November last year, Samsung has been largely quiet about the specifics of the device. The phone is said to be sporting two screens, including one large foldable display.
Samsung's Galaxy Unpacked event is scheduled for 11am PT on February 20 (12:30am IST, February 21).