There have been multiple reports of Retina iMacs coming in 2013 and a retina 27" Thunderbolt monitor appearing after them. I would not hold my breath waiting for the reintroduction of the 30" in any form. What I'm curious about is how the development of Retina displays is going to affect companies like Eizo, who are in the business of producing monitors better than anything AAPL makes. Will they be inspired to produce a retina-style panel of their own? I'd love to see it, but I shudder at the price. Eizo displays are already 1.5x to 5x the cost of an equivalent Apple monitor.