Hmm, looks like maybe sometime in the future Apple may indeed offer multiple resolutions like many PC laptops.
This image is right out of the newest 17 inch Powerbook manual:
In case the image dies, it says:
|Depending on how your PowerBook was configured, it may have a wide-screen display that has a “native” resolution of 1920 x 1200 or 1440 x 900. For either of these native resolutions, other standard resolutions, such as 1024 x 768, are supported.
Older manuals for the previous revision simply said:
|Your PowerBook has a wide-screen display that has a “native” resolution of 1440 x 900 and that supports other standard resolutions such as 1024 x 768.