More Platinum news.

Nintendo has released the official site for Pokemon Platinum, which wouldn't be spectacular except for the fact that it hints at events for the Rotom-form Key, Regigigas evevnt that triggers the other Regis in Sinnoh, introduces the expanded gameplay available through Battle Frontier and introduces many more gameplay additions.

This is a fairly uncommon mass-reveal (particularly for those of us who are spoiled about the game's contents) on the part of Nintendo, but also increases hype for the game, as previously Nintendo events were few and far between in the US and far removed from their Japanese equivalents.

March 22nd, a Sunday, is when you can get your hands on this. The Regigigas event happens prior to Platinum's release at an unannounced time.
Thanks to Serebii for the update!