If you’re in the market to buy a Nintendo Wii, you might want to hold off a bit longer.

According to a leaked ToysRUs flyer, the Nintendo Wii will now be priced at US $199.99, or $50 off the regular price, starting in the last week of September.

It is very likely the rumor is in fact true given falling demand for the Wii, and the recent launch of the PS3 Slim and price reduction of both the PS3 and Microsoft’s Xbox.

Both companies will not confirm the apparent leak.

Nintendo is rolling out the Wii System Menu 4.0 today that will now include an SD Card Menu allowing you to easily work with content on your SD chip. The update now includes support for SD chips of up to 32GB from the previous 2GB. Nintendo also launched a new Virtual Console Arcade, bringing classic arcade titles to the Nintendo Wii. To get the new System Menu 4.0, you can perform a simple update from your Wii.

In more Nintendo news, it is rumored the DSiWare download store will launch on April 5 in the U.S. Via DSi, you will be able to buy various types of games such as Code 10 (Sudoku like) for your Nintendo Wii. Some game titles will be free while others will cost 800+ DSiWare points (100 points = $1).