I've already seen Tarrabah's ornament in the Bright Dust store, so I have to wonder. I realize that even if it's [i]possible[/i] for the Lumina ornament to show up, it's not necessarily guaranteed. I plan to roll the dice before the reset, then wait until the store refreshes for at least one week's chance at a Bright Dust purchase, then refund the ornament purchase before the 7 day refund expiration. But if it's never going to appear, I'd rather just buy it now and get it out of the way.
seeing how it isnt a special package and just an ornament (like TLW's) i think its safe to say it'll probably be in the pool, same for truth.