There are a lot of really interesting things happening in BI. First, many accounting and some business grads are now coming with database knowledge.
They're able to gain insights from data that the older generations in this space didn't have the skills to do.
Way more interesting to me are advances like Amazon's QuickSight [1] which is geared towards business data. You can just upload stuff (CSVs, ERP databases, etc.) and, perhaps, gain some insights. As they build intelligence around similar business data sets it should improve over time.
Next big thing, perhaps not. But definitely something to keep an eye on, at least in my space.