Perhaps in a move to clear out stock before the 3DS comes along, Nintendo has announced that, effective September 12th, both the DSi and the DSi XL will be $20 cheaper.

On that date, the Nintendo DSi, currently priced at $170, will have its price slashed to $150, and concurrently the DSi XL will drop from $190 to the DSi’s old price of $170. The DS Lite, however, will stand firm at its $130 price point. Oh, is that a pricing pattern I detect?

“We know shoppers want to get the maximum value out of every dollar they spend,” said Cammie Dunaway, Nintendo of America’s executive vice president of Sales & Marketing. “Our new Nintendo DSi prices make it easier than ever for consumers to access the tremendous variety of games, applications and social tools on the Nintendo DSi and Nintendo DSi XL systems.”