The temporary "Shiny" cards rolled out along with all the other TR cards. These cards are going to be short lived at most properties as the fully fabricated "textured" cards will eventually appear. At some properties they may be very short lived as they cards are so shiny they can act as a mirror and cause table game protection issues. Most properties got 1 or 2 sleeves (500 per sleeve) of the Seven Stars and Companion Cards depending on the number of Seven Stars at their respective properties.

Variations
I immediately noticed there were slight color differences on the brown color. Some cards you could see a big difference. As you will see on the below scan - (sorry the cards do not scan well because of the mirror like finish, however they are sharp looking) the card on the left has a more reddish brown, the card on the right it is a more greening brown. This difference is on both the Seven Stars and Companion cards.

Please note the only difference between a Seven Stars Card and a Companion Card is that the word "COMPANION" is not on the Seven Stars card, otherwise they look exactly the save.