Creative Director Mike Laidlaw said this, earlier this year:
"Because of how deeply enmeshed in the system companion characters are, we can’t just add them on the fly, part of them has to be shipped on the disc,” he said. “[This] has led to criticism that we’re forcing people to pay for content they already own.
“It’s not the case, but we’ve decided this time to not go that route. There will be no DLC party members.”
So nada on the extras.
No. I'm speaking about character, an elvish traditionalist. I have mentioned breeding for a reason. Conclusions, while on a low level and easy to jump on, are not the best friends. I'm not an expert, in fact I know close to nothing about how characters should be implemented technic wise but considering that I and many other people have already downloaded the game from Origin, 'on-disc' seems to be at least off. I would say that it is one hundred percent possible.
"On-disc" can also mean, as the game is shipped.....or unlocked, depending on the what it is played on. I highly, highly, highly doubt that they would include a character that is only on the origin platform, and not include it for other consoles. That would create a s**tstorm of a response from people. As per the previous quote, they got a lot of flack for doing the whole DLC characters before, which is why they said they wouldn't do it this time around, or again (most likely).
Best you can hope for is more options on people like Josephine, non companions which can be romanced, but placement is rather.....stationary.