Sorry for writing long, late, and looming, but heres what I think Mr. Jobs has in mind concerning the MacBook Air:
The MBA will be ditched within 2011, likely this quarter.
The 11-inch MBA form factor will become the entry-level revived iBook.
The 13-inch MBA form factor will become the top model of the revived iBook.
The reborn iBook will be powered by an A5 processor (A6?) and run under iOSX.
The base model will probably cost somewhere between $699-$799.
The new iBook will consolidate iOSX as the widest, the most consistent, completely integrated platform/echosystem in the computer industry.
And about OS-X:
In the first half of 2012 Lion will be licenced to HP, Dell, and family.
This move will be welcome by PC makers. They will breath fresh financial air, as MS will have to slash Windows price scheme. Most everybody will be happy with lower costs and/or better quality.
Apple can still keep a 10%+ market share as the BMW of PC makers.
Plus Apple will dominate a 70%+ of the high-end-phone + tablet PC market phenomenon.
At $30 a copy, Lion will throw a deadly blow on M$ income.
In a few years, Lion may well tear down Windows supremacy altogether.
Thats what the LION name means, right? The KING of the jungle.
I suspect ever since its inception, the Lion name was thought for this master strategic blow.
I don't think Mr. Jobs ever really meant his famous statement The OS war is over".
He may be now thinking: YOUR DAYS OF GLORY ARE GONE MICRO$OFT. FOREVER.
And there wont be more chapters to this OSs saga. Not for some time.
I also thought the 13-inch MBA could reincarnate into the late MB. but that wouldn't be bold enough for Mr. Jobs strategic genius. And boy, is he a bold strategist.
In January you invited your readers to send their guesses.
Again, I apologize for being late.