I pre-ordered the new South Park game but I am not able to download the stick of truth from ...

So this is a bit confusing but I think you will only be able to get the stick of truth game when Fractured But Whole is released. Below are some of the fineprint in regards to the promotion provided by Ubisoft on the game's site here:

UbiSoft SP Fracture But Whole

However if you get the promotional game earlier then the release that would be awesome. South Park The Stick of Truth is already part of the backwards compatibility program so gaming on Xbox One should be fine. You can check out the
full list of games that are backward compatible here (or just to verify for yourself the game is on the list):

Backwards Compatibility List

PRE-PURCHASE DIGITALLY: PLAY NOW*
We have exciting news! If you pre-purchase South Park: The Fractured But Whole today, you can download and start playing South Park: The Stick of Truth right now for free!

PRE-ORDER: GET A DOWNLOAD CODE AT LAUNCH*

All customers who pre-order the game will get South Park: The Stick of Truth upon launch of South Park: The Fractured But Whole. After the launch of the game, all customers who buy the game during the offer window will get a free copy of South Park: The
Stick of Truth.

Cheers!!

Hey ll chilidogs -

If you have pre-ordered South Park: Fractured, But Whole and Dishonored 2, you should be able to automatically download South Park: The Stick of Truth and Dishonored without a code. These promotions did not require receiving Xbox Live codes.

Try using these links to download your games:

South Park: The Stick of Truth

Dishonored Definitive Edition

Give that a shot and let us know if it works.

Per the game's description "Pre-order now to get Towelie: Your Gaming Bud. For a limited time, get a digital copy of South Park™: The Stick of Truth™ on Xbox One free with purchase at the launch of South Park™: The Fractured But Whole™.South
Park™:" So you won't receive the game until the new game launches. You should be able to download the game for free at that time.

I thought this was the case and even quoted the visible text after my pre-order.
(This was before the delay announcement)

""You will receive a free South Park: The Stick of Truth game for your respective platform immediately if you have pre-purchased South Park: The Fractured But Whole digitally from either PlayStation Store, Steam or other eligible PC digital stores*.... -
(Doesn't mention Xbox Store)

....If you decide to buy South Park: The Fractured But Whole digitally after the release (December 6th) from either PlayStation Store, Xbox Marketplace, Steam or other eligible PC digital stores*, you will receive South Park The Stick of Truth immediately as
download unlock for your platform."

However, my other unposted emails from Ubisoft support seem to imply I should already have the code. Just thought I'd follow up, would have been nice to wet my appetite beforehand.

Thanks for the advice, will consider my pre-order now.

Thanks for this explanation but I thought I shuld get an Xbox One native version of Stick of Truth (not the Back Compatible one on Xbox One).

So this is a bit confusing but I think you will only be able to get the stick of truth game when Fractured But Whole is released. Below are some of the fineprint in regards to the promotion provided by Ubisoft on the game's site
here:
UbiSoft SP Fracture But Whole

However if you get the promotional game earlier then the release that would be awesome. South Park The Stick of Truth is already part of the backwards compatibility program so gaming on Xbox One should be fine. You can check out
the full list of games that are backward compatible here (or just to verify for yourself the game is on the list):

Backwards Compatibility List

PRE-PURCHASE DIGITALLY: PLAY NOW*
We have exciting news! If you pre-purchase South Park: The Fractured But Whole today, you can download and start playing South Park: The Stick of Truth right now for free!

PRE-ORDER: GET A DOWNLOAD CODE AT LAUNCH*

All customers who pre-order the game will get South Park: The Stick of Truth upon launch of South Park: The Fractured But Whole. After the launch of the game, all customers who buy the game during the offer window will get a free copy of South Park: The
Stick of Truth.

Cheers!!

Per the game's description "Pre-order now to get Towelie: Your Gaming Bud. For a limited time, get a digital copy of South Park™: The Stick of Truth™ on Xbox One free with purchase at the launch of South Park™: The Fractured But Whole™.South
Park™:" So you won't receive the game until the new game launches. You should be able to download the game for free at that time.