Can I upgrade my regular edition to the deluxe edition?

Yes you can! You are able to find the deluxe edition upgrade pack in the PlayStation Store.

1. Open the PlayStation Store
2. Navigate to search on the right side of the screen
3. Type in SAROS
4. Navigate in to the SAROS store page
5. Scroll down to find the deluxe edition upgrade for purchase

After you have completed the purchase you will be able to access the deluxe edition armours in the game.