The way I see it there's a definite spark to this path: 13 inch Macbook Pro models phased out in favour of the Macbook Air.
The Macbook Air will gain better specs as prices drop. Better specs will mean Apple can have more assembled at once. So production costs will be reduced per machine. Which will lead to more people buying them as the price of the end product stays relatively constant but the tech specs improve. So we'll be getting Macbook Airs with around 256 GB SSD standard instead of 128 on the 13 inch. 128GB standard on the 11 inch. Hopefully the CPU speed will top 2.0GHz-ideally it will match the current 13 inch Macbook Pro at 2.4GHz i5. (Ivy bridge will of course appear further down the line.) More RAM would sacrifice battery life, so I don't foresee that any time soon. No way until 6 or 8GB becomes standard on the iMac and Macbook Pro.
Now a 13 inch Air with a 2.4 GHz i5 processor, 256 GB SSD and Intel HD Graphics 3000 seems awesome to me. One things for sure-the day when 512 GB SSD comes as standard with an Air, I'm ditching the Macbook Pro. The specs of the Pro with flash storage, the higher res display and thinness of the Air would be the ultimate laptop!
But anyway back to the Macbook Pro. 15 and 17 inch models would stay I reckon. And they'd become more professional. i.e.- more power. Maybe slightly thinner. But would you prefer a 5 mm thin laptop with an i3 processor or a 1.5 cm thin laptop with an i7 processor? (OK; not the best analogy I know. But you get the point-if you want thinness, you'll probably be jumping ship to the Air in a bit.)
The Pro would probably be gaining i7 quad core processors across the board-at higher clock speeds than currently. 750 GB or 1TB standard 7200rpm HDDs. The ODD would remain. No USB 3 til Intel sort themselves out on that. But more Thunderbolt ports (and eventually no Firewire or USB 2 ports). Improved GPUs with 1 GB GDDR5 RAM standard. A maximum upgrade of 2 GB maybe. And perhaps some more elements of the Mac Pro-RAID etc? That's just a wild guess really.
But I strongly think Apple's shifted the Macbook Pro lineup more away from pro users in recent years and more towards consumers. Perhaps that needs a slight rectification. And with the newest Macbook Airs having made the Macbook obsolete and encroaching on the low end Macbook Pro territory, I foresee that rectification being pondered.
The Macbook Air will gain better specs as prices drop. Better specs will mean Apple can have more assembled at once. So production costs will be reduced per machine. Which will lead to more people buying them as the price of the end product stays relatively constant but the tech specs improve. So we'll be getting Macbook Airs with around 256 GB SSD standard instead of 128 on the 13 inch. 128GB standard on the 11 inch. Hopefully the CPU speed will top 2.0GHz-ideally it will match the current 13 inch Macbook Pro at 2.4GHz i5. (Ivy bridge will of course appear further down the line.) More RAM would sacrifice battery life, so I don't foresee that any time soon. No way until 6 or 8GB becomes standard on the iMac and Macbook Pro.
Now a 13 inch Air with a 2.4 GHz i5 processor, 256 GB SSD and Intel HD Graphics 3000 seems awesome to me. One things for sure-the day when 512 GB SSD comes as standard with an Air, I'm ditching the Macbook Pro. The specs of the Pro with flash storage, the higher res display and thinness of the Air would be the ultimate laptop!
But anyway back to the Macbook Pro. 15 and 17 inch models would stay I reckon. And they'd become more professional. i.e.- more power. Maybe slightly thinner. But would you prefer a 5 mm thin laptop with an i3 processor or a 1.5 cm thin laptop with an i7 processor? (OK; not the best analogy I know. But you get the point-if you want thinness, you'll probably be jumping ship to the Air in a bit.)
The Pro would probably be gaining i7 quad core processors across the board-at higher clock speeds than currently. 750 GB or 1TB standard 7200rpm HDDs. The ODD would remain. No USB 3 til Intel sort themselves out on that. But more Thunderbolt ports (and eventually no Firewire or USB 2 ports). Improved GPUs with 1 GB GDDR5 RAM standard. A maximum upgrade of 2 GB maybe. And perhaps some more elements of the Mac Pro-RAID etc? That's just a wild guess really.
But I strongly think Apple's shifted the Macbook Pro lineup more away from pro users in recent years and more towards consumers. Perhaps that needs a slight rectification. And with the newest Macbook Airs having made the Macbook obsolete and encroaching on the low end Macbook Pro territory, I foresee that rectification being pondered.