Switcheroo can now exchange a Griseous Orb as long as neither the user nor the target is Giratina. Switcheroo can now exchange items with a Pokémon that has Multitype (but still cannot exchange Plates with Arceus).
If powered up by a Darkinium Z into Z-Switcheroo, the user's Speed is raised two stages, then the move itself will fail after obtaining the Z-Power since it won't be possible to exchange its own Z-Crystal.
Switcheroo will always fail when used against the raid boss in a Max Raid Battle, regardless of item. It can be used successfully against Dynamax Pokémon in standard trainer battles, subject to the above list of exceptions.