In a conference held by Nintendo of Japan, game designer Shigeru Miyamoto revealed some new information regarding upcoming software for the Wii and DS.
Source: http://www.thewiire.com/news/516/1/Nintendo_Reveals_0607_Software_Details
Japan will see 18 Wii games released by the end of 2006, along with 60 total Virtual Console titles. Beginning in Spring 2007, Nintendo will apparently begin the "Wii Compact Software" line of games which will allow players to download certain Wii titles to their console rather than purchasing a disc. Pricing and storage details, as well as what software will be made available, were not provided.
Source: http://www.thewiire.com/news/516/1/Nintendo_Reveals_0607_Software_Details