Are you confusing DBMC (droibox's version of Kodi) with official Kodi? The former is on Jarvis (16) the latter on Krypton (17).
At any rate both can co-exist on the same machine.
As you have posted in the t8-s section of the forum I assume you have one of the older droidboxes running android 4.4.2.
What is true is that this older version of android (which you can't update) won't run Kodi 17.
There are no real restrictions on add-ons running on Kodi 16. There are some restrictions on accessing some of the servers that add-ons get their movies etc from. I believe that Kodi "forks" like DBMC, spmc, FTMC, CEMC etc overcome this.
So to summarise, I think you are ok with DBMC 16.7 if this is what you have.
If you have one of the new droidbox models (you do say you are setting up a new machine), like the T8-SE ( letters are important) then you can get Kodi 17 from the Google play store if you don't already have it.