I'm sure they will work something out, perhaps offering another prize? And if not Android Central runs, MANY, MANY contests. Are you familiar with the Honor Incentive program? This is a long running ongoing contest that you can enter and maybe win a prize! (I've got headphones coming soon!)....
For any of the old Note 7 contests we had up, we will certainly work out alternate prizes for the winner(s). Certainly an unfortunate situation on the Note 7!