Recently, a reputable Japanese online store listed the release date of the upcoming Pokemon Black 2 and Pokemon White 2 as June 23, 2012. As Serebii.net points out, Japanese retailers are a lot more reliable as far as release dates go (here's looking at you, GameStop, and your notorious falsehoods on Pokemon release dates, putting them on April 1), so while this has not been officially confirmed as of this morning by The Pokemon Company, it is very likely that June 23 is indeed the release date.
This would put it on the second-to-last Saturday of the month and also puts it right on the start of the Japanese Keldeo promotion, which will be available for both pairs of Black & White as well as Black 2 & White 2. However, keep in mind that this does require the pre-purchase of a movie ticket and is available only in Japan, so it is not accessible even to those of us who decide to import the games.
Any word on a date or even a month for the North American, European, or Australian release of Black 2 & White 2? Or Keldeo? Or Meloetta? Nope, nothing yet. But at least we're one step closer to the Japanese release now that we know the date it will presumably be released on.
Usually if a JAPAN RELEASE DATE is here, another one for more countries will be POSTED soon. There will probably be a BATTLE FRONTIER connected through NIMBASA CITY's GEAR STATION. Also, I think that you will be able to choose a starter from an old region. I hope you can get more LEGENDARY POKEMON like MEWTWO in this game. If you can go to another region it will be at CASTELIA CITY's dock. KYUREM will be at Level 50 if you catch it at N's castle. It will be at Level 70 if it is like RAYQUAZA in POKEMON EMERALD.