I have to admit to being a little unclear as to Apple's plans here. I'm somewhat familiar with Turi's product offerings (at least, I was back when they were called Dato). It's more of pure data analytics tool than anything, and personally I found the underlying python libraries which are open source far more compelling than the point and click predictive analytics and charting GUIs which seemed to be their main product. And even on that front I would put more stock in scikit-learn, pandas, dask and the many open source deep learning libraries (mostly built on theano and tensor flow) if I really wanted to do machine learning and distributed machine learning.
Now don't get me wrong, Turi has some nice products, but they tend to be standalone suites designed to let front-line analysts have a nice GUI interface to basic machine learning tools, not "push the envelope AI". I really can't see what Apple would do with it beyond build up a business analytics suite to compete with Tableau and Azure ML. Anyone have any better ideas?