Check out here: http://www.raptorsandrockets.com/news.html

According to the article...only a "few minor adjustments and color schemes for 2006".

I guess that's good or bad the way you look at it...good if you just bought and bad if you were waiitng for something evolutionary.

 

usually every 4th years the major changes, the lower panels will have a cut out exposing the collector box though not shown in that pic.