A Weibo leak claimed that Samsung is testing both the Snapdragon 620 and Snapdragon 820 SoCs for the smartphone. The smartphone will apparently include 3GB of RAM, microSD card slot for memory expansion, and a non-removable battery.
A benchmark chart showing the performance figures for multiple upcoming SoCs, makes the rumour seem quite credible.
Samsung demonstrated foldable display prototypes in the past, we haven't heard anything about those displays going into mass production yet.
So far the only bendy phone to reach the market was the iPhone6 but that was not intentional.