XSEED Games has confirmed that it will release Fate/Extella Link for Switch and PC via Steam and also on PS4 and PS Vita when the game launches in the west in Q1 2019

https://gematsu.com/2018/10/fate-extella-link-for-switch-coming-west-pc-version-announced

The previously announced “Fleeting Glory” Edition for PS4 (Which is 79.99$) will be released on switch as well, including a soundtrack CD, a pack of 10 collectible cards depicting each of the new Servants, a 17-inch by 24-inch cloth poster and a 3-inch by 4.5-inch acrylic diorama featuring the new Servants Nero, Drake and Scathach in a custom box.