Multi-Boxing is OK.

It was 'Policy Update for Input Broadcasting Software' no more no less and there has been no official ruling that I have seen regarding ISBoxer one way or the other (yet).

So far no mention of Hardware broadcasting being banned so that may or may not be a future issue.

In the end you have to look at the "Spirit of the Law" vs the "Letter of the Law" and also worthwhile to denote the direction of Blizzard...

2 things stand out to me in the Blizzard Announcement:

  • -"...allows a single keystroke or action to be automatically mirrored to multiple game clients...";
  • -"...and we've seen an increasingly negative impact...";

Those are the 2 cruxes of the current direction...