Boys am I excited! Ever since I released the Scarif Mission trailer for SWOP I have been secretly working behind the scenes with a talented Arma 3 programmer to bring the SWOP/Arma Community a full-scale Immersive, cinematic, feature length campaign for the SWOP mod. Originally planned for MP it has been refocused into SP for more immersion and better elements.
"Players will partake in missions across the galaxy stepping into the boots of various Clone Troopers - along with their respective regiments, during the tail end of the Galactic Republic and beginning of the Empire. Featuring Combined arms assaults, linear narrative driven scenarios & immersive capital ship battles raging in the atmosphere Players will realize what the workhorse of the republic - the clone trooper, will bear to achieve victory."
This is the official release trailer, feel free to repost as you wish but please do cite your source!
SWOP is a total conversion mod for ARMA 3 importing numerous Starwars assets to achieve the look and feel that many Starwars fans have come to love. Check it out here: https://vk.com/swopposition
The closest is the battlefront games, but they are aimed at multiplayer so not much of a single player campaign.
There's often a thread on GOG.com about remaking Tie and x-wing in a modern game engine. Not sure what stage they are at with that though.