There's no mention of restocking fees in the announcement, so unfortunately it's hard to say. I think some changes to the return process may be implemented (this is from the US update, so we may wait a little longer for it, if they introduce the same options here), but they only really address what happens when you provide a free return and the item doesn't come back in the same condition: "Starting this fall, sellers who offer free returns can decide if they want to offer less than a full refund in cases where an item is returned that is not in the same condition that it was in when you shipped it (e.g., a damaged item or an open-box return)."
I take that to mean you can offer free returns, have no restocking fee enabled, but still deduct money from a COM return if the item comes back damaged, while still qualifying to be found under the free returns filter they'll add. That would mean, without a restocking fee, you'd still be out postage costs, though.
I'm guessing they expect sellers will add a little on to all item prices to cover paying for the returns that happen - the illusion of free, AKA the benefit of getting other people to contribute the cost for 1 person to have the illusion of free. 
