A patch has been released, allowing multi-selection for those with multiple prestige levels. The maximum number of Pokémon that can be saved is six, and it will be backward compatible (you will be able to use multi-selection the next time you reach prestige level).
A few fixes, improved UI for prestige, item usage, the mine now gives items that can be sold in Treasury, and correction of the map in the arena.






The prestige button is located at the top right, just to the left of the money button.