I find it hilarious that the Droid Maxx 2 didn't receive a single update for months and then all of a sudden BOOM! Marshmallow. For the Turbo, months pass and it gets a small security patch... Bottom line, this phone is pretty much going to be the final pick, the last guy in the kickball teammate selection in middle school, mainly because it's just not "hip" anymore. Everyone is talking about Nexus 6P, the cliché-esq Samsung phones, LG G4/5, or Moto flagships like the Moto X Pure Edition (lol, everyone goes crazy over that one). The DROID line is dying, and I believe it's because of the way they are advertised.
You would think that this phone would have gotten plenty of attention, as it was one of the first (if not THE first) device to utilize the QuickCharge tech ("40% in just 15 minutes") and a whopping 3,900mAh battery! There weren't that many ads for it at the time, or at least not as many as Samsung or anyone else.
I didn't even know much about it until I was at Verizon getting it. (In fact, I was interested at the Moto X 2014). You had to SEE IT to enjoy it. Maybe it should have been branded "MOTO" Turbo.
Now, because of poor sales, Verizon probably wants to forget about it, not invest money in it, and put it last in line for updates.
So, until all other Verizon phones get updated, the Turbo is going to have to wait...
My prediction: OTA for Android 6.X.X Marshmallow for Droid Turbo (2014) will commence on August 1st 2016.