a fun exercise
I had some fun last night. I called MicroCenter (near me in Northern Virginia) and asked about 14" iBooks. Turns out they're out, and not expecting any more. The woman who helped me said the last time they "ran out" was when they were first introduced. I checked several other mail order sources and found the same thing, more or less.
So here's my theory:
1) Apple to no longer ship 14" iBooks at least in current config., but they will continue to offer a 14" version, probably because people are obsessed with screen size. They will increase resolution, or put in a slow G4, or both. (I can't see them releasing another G3 14" -- my guess is by putting in a G4 they get the "middle" of the market or the people who just like to spend money, but don't want to spring for a TiBook).
2) Apple to continue with the 12" iBook. It's got a lot of appeal. They'll bump this a few mhz but leave in a G3 which is just fine for most users.
Remember, most of the people on this board impress me as power users and may have higher expectations than the other 90% of the market. Most laptop users are doing fairly low-tech stuff (word processing, Internet, and spreadsheets) and don't necessarily "need" what you or I might "want".