First reports said that Samsung is working on fondable phone to release it in January this year, which obviously didn't happen. 

New reports claims the device won't be coming this year at all. The Korean company will start mass-producing fondable displays by end of this year, which means it will arrive next year. 

The device will be a 5-inch while folded and would become a 7-inch tablet when un-folded. Rumors indicate using of Snapdragon 820 and 620 for this project. RAM is said to be 3 GB.