Some new information regarding WiiWare games has come out. For one, the filesize of the games has a 40MB max. While this is a little bit more than the biggest VC games, it's not very big (XBox Live Arcade games were originally capped at 50MB, but are now capped at 250MB).
We're still going to end up with storage issues though. Why? Because a lot of them are on the horizon. Nintendo is working on about 35 games and another 65 games are beind developed by third parties. Although Nintendo is limiting third party developers to one release each month per developer.