Replay systems ยท post-launch answer
STAR WARS Zero Company New Game Plus: Is There One?
STAR WARS Zero Company does not have a New Game Plus mode. The launch FAQ does say that certain customization options unlock on subsequent playthroughs, so replay value exists without a carried-over New Game Plus progression track.
Updated

No New Game Plus mode
The official launch answer is no: there is no New Game Plus. Do not expect a menu that carries campaign progression, equipment or a completed map into a fresh run.
What replays still offer
The same answer says certain customization options unlock on subsequent playthroughs. That is a replay reward, not proof that units, AP, weapons or mission progress carry over. Treat a new campaign as a new tactical run unless the game itself shows a specific unlock.
- New Game Plus: not available.
- Subsequent playthroughs: some customization options can unlock.
- Carried-over campaign progression: not confirmed.
A good reason to replay
Use a second run to change difficulty, permadeath settings, squad composition and bond choices. The difficulty guide and bonds guide explain the decisions that can make a replay feel different without inventing a New Game Plus ruleset.