The big games will be left out from getting a Switch release so don't get your hopes up for a vast catalogue of 3rd party games.
No Battlefield 1.
No Tekken 7.
No GTA 5.
No Rocket League.
No Red Dead Redemption 2.
No South Park: The Fractured But Whole.
No Outlast.
No Resident Evil 7.
No Sniper Elite 4.
No Titanfall 2.
No Dishonored 2.
No DOOM 4.
No Project CARS.
No Tomb Raider.
No AoT: Wings of Freedom.
No Kingdom Hearts 3.
No Overwatch.
No Trackmania: Turbo.
No Just Cause 3.
No Mass Effect: Andromeda.
No Injustice 2.
No Watch Dogs 2.
No Dark Souls 3.
But hey, who really cares. The current catalogue of the Switch is completely fine.