Joystiq did some deep sleuthing and figured out when Nintendo will drop the sheets on everything else they care to tell us about Wii. According to the German Games Convention Website:
Nintendo has stated they would reveal launch details, including pricing, sometime in September. August 23 might be close enough for a revelation or two.
And oh man, it’s right there in black and white (and maybe some other colors…) Nintendo will be giving an address entitled “Wii Will Prove Our Promise.”