I have the Enhanced edition and am interested in buying the Definitive edition, but there's no upgrade option, just one to buy the base game over again.

Original owners got shafted hard with this nonsense. they should offer those of us who have the enhanced edition an 5 dollar upgrade path to the definitive edition.

Came to the forums to see if there was an upgrade option for my enhanced edition, very annoyed to find out there isn't. Adding these Dev's to my black list and now feel inclined to leave a review for a game which wasn't terrible.

I purchased the Definitive Edition, and everything shows as the Enhanced Edition. I think the Definitive Edition is the Enhanced Edition, just with more DLC stuff.

The same happened in my own case when I bought the upgrade on Epic.
The game stayed the same as Enhanced edition and didn't changed.