Here's what I gathered so far on the new Airs, apologies if I missed anything or got something wrong:
Good:
More RAM - up to 4GB. At last.
Flash storage across the range - faster to resume from sleep, faster in general
11.6" also available - at least there is a choice of sizes
Beefier graphics chips - will now drive the 27" Cinema Display natively
Stereo speakers
Glass Trackpad - though you may not prefer it
Higher resolution displays
+1 USB port
Improved battery life (TBC)
Reduced thickness and weight
Not So Good:
No more backlit keyboard
No more bundled USB>Ethernet adapter
Still got display port/audio out/magsafe on different sides of the chassis
Unknown:
Have they fixed the hinge problem?
Have they improved the cooling design?
Are the edges still quite sharp on your wrists?
Is the display fully glossy or like the old ones?
- the only compelling feature for me over my revC is the 4Gb RAM. Not worth the cost of upgrading.
Good:
More RAM - up to 4GB. At last.
Flash storage across the range - faster to resume from sleep, faster in general
11.6" also available - at least there is a choice of sizes
Beefier graphics chips - will now drive the 27" Cinema Display natively
Stereo speakers
Glass Trackpad - though you may not prefer it
Higher resolution displays
+1 USB port
Improved battery life (TBC)
Reduced thickness and weight
Not So Good:
No more backlit keyboard
No more bundled USB>Ethernet adapter
Still got display port/audio out/magsafe on different sides of the chassis
Unknown:
Have they fixed the hinge problem?
Have they improved the cooling design?
Are the edges still quite sharp on your wrists?
Is the display fully glossy or like the old ones?
- the only compelling feature for me over my revC is the 4Gb RAM. Not worth the cost of upgrading.