Masuda says a “very important announcement” will be made on Pokémon Smash this week

Pokémon game director Junichi Masuda has said Japanese viewers of the Pokémon Smash TV Show can look forward to a “very important announcement” this week.

Masuda has previously said to watch the show after being asked whether a successor to Pokémon Black/White was in the works or not, but that was last week, and nothing was announced.

Siliconera says it could be "a full reveal of Kyurem’s alternate form or a giveaway of the newly-revealed Keldeo."

Here's the announcement from the man himself: "On this coming Sunday, Februrary 26, 2012, from 7:30 A.M, I, Masuda, will be appearing on TV TOKYO’s Show, “Pokémon Smash!” Not only that. And there…I will be making a VERY important announcement, so be sure not to miss it!!"

You'll just have to watch a see, we suppose.  If you can't access the show, not to worry: Masuda will take to Twitter following the show with the pertinent information.