The event will be held at First Niagara Center and the HarborCenter in Buffalo from May 30 to June 4.
Matthews, a 6-foot-1, 210-pound native of Scottsdale, Ariz., had 24 goals and 46 points in 36 games for Zurich in
National League A, Switzerland's top professional league. He was second in voting for league MVP and won the league's Rising Star award.
He's No. 1 on NHL Central Scouting's final ranking of international skaters for the 2016 draft, which will be held at First Niagara Center on June 24-25.
Laine (6-4, 206) had 17 goals, 33 points and 253 shots on goal in 46 games for Tappara in Liiga, Finland's top professional league.