Why do all 'hardcore' games have system updates?

[Vectorferret]

The updates on the disk are primarily new drivers or API's. For example, Metroid Prime 3 contained the ability for games to post images to the message board (which the game uses). Wii Sport Resort contained the code for accessing the Check Mii Out channel from inside games. A lot of the others are things like Wii Speak. The hardcore games tend to have new features more often, so they have updates to enable this support on the Wii in a central way (rather than each game directly modifying the Wii system memory to do these things, it can be tested in one central way and deployed in an update).