This is interesting! I have owned a number of Chevy Trucks. I currently own a 2006 Silverado crew cabs. For most of last year, and into the spring of this year when GM finally released the info on the new 2014 Silverado, I was daily looking for updates. For those who may not know GM began production on the 2014 Silverado crew cab on April 29th. Dealers are just now beginning to see them arriving. The extended cab version will begin production in July, followed by regular cab production in August. Personally I am not happy with what I have seen of the new 2014 Silverado. It may be all new as they claim but it looks like a smoothed up version of the 2013.
There is a web site known as the GM Authority Daily Digest, that you can sign up to where they will send you daily emails so you can track all of the new stuff GM has coming out.
I plan on keeping my 2006 Silverado crew cab for a while. The only GM truck I might even be remotely interested in right now is the 2013 Avalanche, which is being discontinued, and will not be produced again. According to the GM Authority Daily Digest there will be some very interesting new trucks coming out in late 2014, and on into 2015.