Well where I am usually the older ones populate the refurb store not the new ones. You seem to think I'm kaing up an idea of people wanting the 2015 - there are numerous numerous posts on here of people buying the 2015 in preference to the 2016. Personally I have a 2014 - I see no need to upgrade it to either 2015 or 2016 as they don't offer me anything worth upgrading. Unless things change by the end of the year I'll likely go Dell
There will always be folks who hold onto an older model. This happened in a BIG way when they cut the internal CD drives. But the future won't be denied.
Like I said, if you like the new one, great. I upgraded from my 2015 to the new model because I'm a photographer. The screen is improved and on location shoots, I need every edge I can get.
I can also type faster on the new keyboard faster and the larger trackpad makes photo work easier for me.
In the end the improvements on the new model will matter to some and not at all to others. Not a big deal, but don't kid yourself. The new machines will be everywhere in a short period of time. I was at a shoot two weeks ago and I was surprised to see more of the new models than old. The good news is that I got a good price on my 2015 model. Now I'm selling one of the 13" touch bars and getting 100 bucks less than I paid, so I'm a happy camper.
R.