Raichu-GX has been revealed from SM3+! The set will be released in Japan on July 15th. Thanks goes to Bangiras for the translation!
[C][C] Powerful Spark: 20+ damage. This attack does 20 more damage for each [L] Energy attached to all of your Pokemon in play.
[L][L][C] Thunder: 160 damage. This Pokemon does 30 damage to itself.
[L][L][C] Volt Tackle-GX: 120 damage. Your opponent’s Active Pokemon is now Paralyzed. (You can’t use more than 1 GX attack a game.)
When your Pokemon-GX is Knocked Out, your opponent takes 2 Prize cards.
Weakness: Fighting (x2)
Resistance: Metal (-20)