I haven't tested the new update since my computer can easily handle the treant casting now, but Freddie mentioned that the mouse broadcasting is even better than before:

http://hotkeynet.com/phpBB3/viewtopic.php?f=8&t=950

For those of you looking for AoE spells, mouseover healing using your tank to control your main, or whatever else you need mouse broadcasting for, then I'd highly recommend HKN.