Apple will not make deals on the S7. Maybe they will give "free" Apple gift cards but nothing else. Some resellers may discount the S7 but it will not be by much as it’s still a very recent device
You’re much more likely to see a Black Friday sale on Series 6 watches as resellers like Best Buy clear out the last of their stock. For Series 7, you won’t get any discounts direct from Apple. Resellers might take $30ish off but I wouldn’t count on it this year given the supply constraints the S7 has faced. Not much incentive to offer a discount when demand is outstripping supply.