I am not the OP but in my case it said to request a free download link to Zorin OS Pro 16 for 15.3 users unless I read it wrong. Also since I purchased at 15.3 and this is the only major update I would think 16 would be free. I would be happy to pay but I think if regular major releases are going to cost $40 even for regular users is a bit much. May I suggest that there is a regular user license fee and a first time user fee. Like $40 for first download but next major release is $20 and as long as you continue to use Zorin all future upgrades are only $20. Just an idea.