The rumored Generation V Pokémon covered by a question mark graphic in the Dec. 4 feature about the 12th Pokémon movie is actually a Pichu with a spiked ear, according to a movie poster posted to a Japanese image board. The poster shows the Pichu alongside Pikachu and Pochama.
Filb.de has reported the name of the 12th movie is 「超克の時空へ」 Toward the Overcome's Space-Time. Bulbanews has tentatively chosen to translate the title as Toward Overcoming the Space-Time Void.
Serebii said on his site's forums that the title came from the Dec. 15 (January) issue of CoroCoro.