My little bit of research showed they added the new computer in 2015, and updated it in 2016. I may be wrong, I didn't spend too much time on that. One year they made the powered driver's seat standard too. Little things like that might make a difference to me. ;-) I don't NEED a new car right now, just ready to update from my 2004 SR5, so I'd rather wait and be sure I will be happy for many years to come.
Let me explain something from an engineering point of view that might help you:
Any vehicle manufacturer will "update" a vehicle almost every year, even though you won't see or know about most updates. Why?
To make a vehicle safer (all the safety features including material spec changes)
To make a vehicle more sell-able (paint colors, entertainment systems, model name changes, etc)
To reduce manufacturing costs (materials change, manufacturing techniques)
To improve efficiency (From ECU tweaks to type of tires provided)
To improve some type of performance (ECU tweaks, changing brake line material, etc)
My point is there have been hundreds of changes to the 4Runner since 2014 that most people never know about. Sure, body style changes from 2013 to 2014 was something people could see and thought it was a major change. In reality though, the 5th gen 4Runner is basically the same since they started offering it in late 2009. As a matter of fact the 5th gen 4Runner uses a LOT of the same parts that were used on the 4th gen 4Runner!
All sources indicate that there will be absolutely no change (other than renaming the Trail Edition to TRD Off Road and adding the cement color to the TRD PRO. You have a guy Jordan that has been telling you this stuff and he is giving you the same info that the dealer gets.
Now, if you are only worried about the color or the body styling or entertainment system that's fine but pretty shallow. What you should be more concerned with is that they are continuing to give us a bullet proof engine, drivetrain and suspension. THOSE are the things that give you years of reliability and durability, not paint colors. All indications in those important areas say that 2017 will be basically the same as 2010. That's what is important. Sure, they have made hundreds if not thousands of changes since 2010 but the basic premise of the 5th gen 4Runner will continue. Knowing that should give you confidence to make your purchase.
The 4Runner design changes are slow and they build on what works and major changes rarely happen. They make small tweaks years to year and most are never known. If you want something different, then wait til 2018 but even then it might be more of the same. Good luck.