Most Turkey Breasts do come with giblets.
If you have hotel style Turkey Breasts they have whole wings attached and usually portions of the back, neck, skin, ribs, neck as well as the giblets.
Not all Turkey Breasts you buy come with giblets because it depends on how it was packaged.
I've found some Turkey Breasts I've bought had turkey giblets while others did not so it can vary.
The Turkey Giblets are a turkey's gizzard, heart and liver so sometimes they're removed and sometimes they're not.
Depends on the company packaging the turkey as to whether or not they have the turkey giblets.
If the turkey has the giblets they will usually be packaged in either a plastic package or paper package and be inside the turkey.