(I updated the topic name to reflect a broader conversation.)
Several of us got a chance to participate in a demo for the JTouch 65-inch Whiteboard today. I don't want to speak for others, but I was impressed with its potential to replace SmartBoards.
The screens are capacitive touch, which means they function like a large iPad screen in terms of sensitivity. You can hook a computer right up to them, the whiteboard features seemed fairly robust, and you can cast student devices onto the screen as well.
I'd be interested in seeing how Smart Notebook software runs on the system, but all indications are that it would work well if you ran Notebook software on a device connected to the screen's touch capacities. They'd be some loss of function in terms of SmartBoard tools, but other than that things would pretty much work the same.