It’s all speculation, but I suspect they won’t bring it back. It was a discount that’s been in place as long as I have been buying Festools (6.5 yrs). At that time Festool was the only one really pushing dust collection and I think this was their way of getting people to try it. These days I think it’s becoming more mainstream and even required in some occupations.
I do think they might replace it with some other promotions, but that’s just wishful thinking. They do run promotions in other markets, but the US markets typically only sees 1 a year.