This is probably old news to most but I emailed my dealer and he said they received there first 06 GX

 

Wow, that was a short run of the 2005's. I bought mine - the very first one my dealer got - in mid-December 05. Only a 8month run... Sucks no SAT radio yet. We have the same Gen4 NAV system as the other cars so I wouldnt think this would be a big deal to offer a module.

 

what is the difference between the gen 4 model Nav vs the older ones.

 

But don't forget that the 2005's were delayed by 3 months. My dealer was never able to explain what caused the delay, but I also was waiting for the 05's to come out and got mine in early-mid December last year. From the sounds of it, we essentially have a 2006's