DisplaySearch has released a new OLED lighting report recently, and now they give us some new information from the report. They predict that the OLED lighting market will take off in 2011. Revenues will surpass PMOLED display revenue in 2013 or 2014. By 2018 it will be a 6B$ market.
Here's a nice chart they published, showing the leading OLED lighting companies and their announced roadmap: