If you got it from Humble Choice and want to upgrade the Standard version

[No skill only Tiktok]

If you got the game from Humble Choice that is the Standard Edition.
Strangely, they removed the Season Pass and DLCs from Steam so you can't upgrade your version to the Ultimate anymore.

But you can still buy them on humble store:
Links:
https://www.humblebundle.com/store/control-season-pass
https://www.humblebundle.com/store/control-expansion-1-the-foundation
https://www.humblebundle.com/store/control-awe-expansion-2

Be aware, they will probably run out of keys, so you will end up in a spot where you won't able to upgrade your version.

It is kinda sh1tty what they are doing imho.

[Seamus]

Hopefully this removal of regular edition and dlc from the ultimate edition store page is a prelude to them fixing this damn issue and just giving standard edition its own store page.

505 actually communicating would help.

[C4pM]

Originally posted by Seamus:

...505 actually communicating would help.

I agree with you 100% on this. The fact that they've said nothing so far, leads me to suspect that this is how they will continue.

[No skill only Tiktok]

Originally posted by Seamus:

Hopefully this removal of regular edition and dlc from the ultimate edition store page is a prelude to them fixing this damn issue and just giving standard edition its own store page.

505 actually communicating would help.

That is possible and I hope it will end up like that, but the lack of communication makes me think they will leave it this way.

[kejmil16]

Originally posted by Seamus:

Hopefully this removal of regular edition and dlc from the ultimate edition store page is a prelude to them fixing this damn issue and just giving standard edition its own store page.

505 actually communicating would help.

I have no idea how you can be so naive. The situation with the lack of updating to the version for new consoles for owners of the game + add-ons shows that 505 Games did it on purpose and will not restore add-ons on Steam :)