Here is some clarification on the matter: The "newest" and "enhanced" titled models do hold truth to their respective titles, but in this case, may have been misinterpreted.
Because we purchase directly from the manufacturer, and because we are a volume airsoft dealer, we are able to turn over inventory at a high rate of speed. This allows us to get newer inventory, faster. There is always a new batch of ACM models in our warehouse every 4-6 weeks. The manufacturers will tweak production models from time to time (i.e. stronger parts from new suppliers, re-worked parts due to distributors' feedback on possible performance/reliability related issues, etc). We are thus able to CONSTANTLY offer the "NEWEST" airsoft, as they are fresh off the production line.
In contrast, smaller dealers may not have new inventory until they move current inventory, which may delay receiving the newest production batches. What we generally sell is almost always the newest production batch, whatever the product may be.
Hope this helps put things into perspective.