There is a note saying "We will be disabling coupons tomorrow!". Does anybody know which coupons?

Cash Shop discount codes, most likely

We will be disabling coupons tomorrow! Not a lot of info about it though.

Thank you. I guess I should have looked there first (I thought Help and Questions would be ok).

No, there hasn't been anymore info other than the notice given. I'm hoping it's just for the duration of the sale, though because I'm pretty sure they used to be disabled for Black Friday sales.