Wow. This caught me completely by surprise, even though it happened a little while ago.
I’m pretty interested in this one, since Turi (formerly Dato) maintained a Python package called GraphLab, which is used in the University of Washington Machine Learning Specialization (which I’ve been doing in Coursera on my sparsely available free time).
Although they’ve already made a statement that the academic version of their toolkit will still be available (which I just got by e-mail), I hope the normal version will also be kept alive somehow — it’s a really nice toolkit (probably part of the reason Apple bought them), and I was getting to like it…