The particular model is less important than the fact that the world’s leading smartphone manufacturer is investing in AMOLED screens, which are more durable and deliver higher quality images, and pushing towards using them without the rigid glass it currently encases them in.
Flexible screens are currently hamstrung by the challenge of finding flexible electronics components durable enough to withstand repeated bending at a price consumers will pay. But a midway point involves putting some of the componentry of the electronics into the AMOLED surface, while leaving the others packaged in a rigid container.
See the full story here: http://singularityhub.com/2013/10/03/samsung-promises-flex-screen-phone-by-the-end-of-the-year/