DailyTech makes an very interesting parallel with Wii

The Nintendo marketing VP isn’t showing any of her cards, but one thing is for sure: there will be another Wii. The obvious things that Nintendo would do to make the Wii more attractive are add new colors, increase its internal flash memory, include rechargeable batteries for Wii Remotes and component cables. There isn’t much merit to making the console any slimmer or lighter, and high definition support isn’t likely to happen.

The Wii is attaining mass-market appeal, much like the iPod. It may only be a matter of time before Nintendo adopts Apple’s hardware redesign strategy.

It's a nice plan, but some people (like myself) will feel screwed out of the newer stuff for being early buyers or will play a waiting game with Nintendo, afraid to jump into the Wii pool, to see what new feature will be released next.