Well, we will never know:
We are committed to continuing to support Diablo III, including taking action against botting and cheating. Please keep in mind that we do routine actions to keep Sanctuary fair for everyone, and we will not regularly provide public notice of mass account actions.
Someplace there was a post or blog with a blue comment about there being more aggressive future banning regarding botting and the like, so could be some of that going on too.
But they aren’t going to give us any details, confirmation or otherwise, which to be frank is inline with their MO on these things.
Game on.