Corning's major announcement at SID was the new Willow glass product. This is an ultra-slim (50 um and 100 um) flexible glass that can support backplanes and color filters in both LCD and OLED panels. Willow glass can withstand temperatures up to 500 degrees Celsius, and can be used in roll-to-roll production processes.
Corning says that in the near future Willow glass can be used to produce rigid OLEDs panels in processes that need flexible glass (such as roll-to-roll), and in the long term it may also lead to actual flexible panels based on glass. Glass have several advantages over plastics, mainly that it's a better barrier and it can result in better displays in terms of resolution, backplane speeds, etc. However the major disadvantage is that it can be shattered, unlike plastic-based displays.
Willow glass is not intended to be used as cover glass. In today's typical OLED display, several glass layers are used: a substrate layer, an encapsulation layer and a cover glass. The cover glass is different as it's usually much tougher (Corning's Gorilla glass is one example of tough cover glass) and it's also optional.
Corning intends to start producing Willow glass in Q3 2012, in one meter wide rolls (and up to 300 meters long). They will also offer ITO-coated Willow glass rolls (0.5 meter wide) in Q4 2012.
Corning was also showing their Lotus glass, which is currently the best solution for LTPS OLEDs according to Corning. Lotus replaced the older JADE glass product that's no longer available. It turns out that the production plant in Korea (jointly launched with Samsung) is now up and running, and Samsung is already using Lotus glass panels from that plant in their OLED smartphones and TV panels.