NHL central scouting has released it's future watch list. The list is essentially players who stood out in the 2015-2016 season and are in early consideration for being ranked for the 2017 draft.
Article which highlights potential 1st round picks:
https://www.nhl.com/news/2017-nhl-dr...?tid=277764372
Full future watch list:
https://www.nhl.com/news/2016-17-nhl...?tid=277764372