By Adam Nagy
There is also a webinar coming next week if you are interested:
I as well already mentioned one of the changes in the new release: Add-In security in Inventor 2017
Just a quick view of the amount of API changes compared to previous releases:
You can find a complete list of what changed in the "What's New in Inventor 2017" section of the Inventor API Help File at "C:\Users\Public\Documents\Autodesk\Inventor 2017\Local Help\admapi_21_0.chm"