Earlier today, LG said that they hope to sell 200,000-300,000 OLED TVs in 2012, and up to 2 million in 2013. Market research company iSuppli is much less optimistic - they say that global OLED TV shipments in 2012 will amount to just 34,000 units. This will grow to 2.1 million in 2015.
It's not clear from iSuppli's report, but it seems that they are only taking LG into account in their forecasts. Samsung will also offer its own 55" OLED TV in 2012, and today we heard that Panasonic are also developing their own OLED TV.