Will the set's Special Guests cards be available?
Yes! As usual, the Special Guests cards from the set will be available on MTG Arena, appearing in packs and being craftable with wildcards. Additionally, we've adjusted the rarities of some of these cards to match their latest printings. This doesn't change how often they appear in packs, just what wildcards are needed to craft them.
The article says that you can get a special guest card from the pack as before, but the Arena store pack is not displayed on the special guest card from the Foundations Card Image Gallery.
Is this a mistake from the card image gallery or has it been changed to not come out of the store pack?