Well it's time I guess.
Advance retail listings forwarded to Kotaku indicate that Nintendo is planning to issue its first price drop on the Wii, with a less expensive version of the console—currently priced at $249—coming the first week of October.
That listing comes from an early version of a Walmart ad that loosely dates, but does not price a "rollback" for Nintendo's console. While the ad is not official confirmation of a price drop, the timing makes sense, as the Wii is about to enter its fourth holiday shopping season at its original price.
Should Nintendo announce a price drop prior to October, it has a venue at which to do it. The company will be participating at the Kyoto Cross Media Experience 2009, a multimedia event that runs September 26th to October 4th, overlapping with the Tokyo Game Show.
http://kotaku.com/5357766/wii-price-drop-looks-to-hit-first-week-of-october
Now the question is ... How much??