It seems the latest updates has removed SuperSU from the malware list.

That’s too little too late though. Avast!'s dubious marking of SuperSU as malware has already caused several dozens of 1-star reviews on SuperSU, a drop in average ratings, lost sales on SuperSU Pro, etc. Real money and rep has been lost over your mistake.

Inexcusable for an app that actually uses root.

So what exactly are you guys going to do about this (in say, the next 48 hours) ? Removing it from the list is certainly not going to cut it.