Loudred and Exploud have been revealed from S4 Astonishing Volt Tackle.
Cards have been translated by ToineLay, thank you!
[C][C] Round 20x
This attack does 20 damage for each of your Pokémon that has the Round attack.
[C][C][C] Hyper Voice 50
ToineLay: It's like a mini Exploud! No word on Whismur yet.
There is slight mistype on loudred. It said the attack does 50 damage per pokemon with round attack but it only does 20.