I found the answer to this question from other sources. Therefore, I post it here that I found, and I believe that this is the correct answer. It is my opinion that this may be wrong.
So, in my situation, I can add a new item to my inventory.xml file, as well as to my iTunes account and put it in a new item for review.
The reason the public (users) will not see my new package is because I only show valid products that I received from SKProductResponse. Therefore, during the review process, it will not be a valid product, and it will not be displayed in the list of available items to users.
Now, we can see this with the Apple Tester, because we both use the In-app test user account to test new items, and I believe that the user account for checking applications returns the entire product as valid.
So, from this thread, I decided to move forward with this and hopefully it should work.
Deeps
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