I think we'll see them this year. As to how useful that'll be, remains to be seen. Bendable/Rollable electronics are definitely out of the question right now (the fact that you can bend the screen doesn't mean you can do the same with the rest of the device, and a transparent rollout screen is not very clever, as several LCD products in the past have shown). Think about this: You can bend your screen around your device, so the same screen falls all around it. Then you drop your phone and it lands on one tiny corner, or on its side. Bye bye screen. Phone case? Will probably get in the way and detriment from your phone experience.
Another feature that's poised to be trending this year is haptic feedback, or screens that make you 'feel' the things you touch. Samsung already has this to some extent on a few of their devices, but it will pick up because the rumor mill has it that Apple is set to 'invent' this technology with the iPhone 6.