Thanks for asking the questions. Yes, the upgrades from Amateur to Professional at this point also qualify for a free 3DCoat 2021 Individual license.
To make it a fair policy towards everyone, we plan to keep the standard price for upgrades from Amateur to 2021 Individual at the level of current upgrades from Amateur to Pro, i.e. $280. Temporary discounts related to holiday sales or special offers are also possible, just the same as it's been happening to-date. So, it's up to you to decide at which point you'd like to upgrade. If you are happy to wait until the best discounted pricing is offered, that'd be the ideal scenario probably. Otherwise, it wouldn't make much difference to upgrade now or at a later point.