How do you predict the success of the product? Without a crystal ball, we can probably try using the amount of internet hits to provide some insight.
See the link below for Google trend for Nook:
http://www.google.com/trends?q=nook&...ate=all&sort=0
Search volume index for "nook" spikes up after the announcement of the Nook Color; the spike is comparabale to the time when the original Nook was announced and when B&N cut the price and released the WiFi model. It is also interesting to note that the news volume index for the Nook Color is lower when compared to the last 2 big announcement. This seems to indicate the Nook Color drives more interest from the public than the media.
I also compare the search volume index of the Nook to other ereaders. Nook is ~ 3 times higher than Kobo and the Sony ereader. The Kindle is ~ 3 times higher than the Nook and the iPad is ~ 3 times higher than the Kindle.
Based on the data from google trend, there is a likelihood that the Nook Color will be as successful as the Original Nook.