I'm glad you liked the game!
The steam version does have more information about Seren's creator (you even get to see them in one ending!). You get hints about Seren's past memories, but you won't get to see them outright. There are also secrets that show a bit about the origin of Seren's creator and AI like Seren in general.
There is a new good ending that shows a lot more of the Operator, but he is not a love interest. Dex is the only love interest in the game, no matter what version you play.
I hope that helps!