I agree with the above statement.
However, just give it time. Yes, it's been awhile. We get it.
The Air hasn't been updated in over 400 days. The Mac Pro, LCD's, and XServe haven't been updated in an even longer period of time.
Apple won't update everything at one time. Mac Pro's, iMac's and LCD's could all possibly be refreshed tomorrow. I doubt all would be released all at the same time, but who knows. And I'm sure soon after this, the Air will be updated or EOLed.
Also, what could the air be updated to? It will still have a C2D because of the graphics. Intel, Nvidia crap. If it keeps the C2D everyone will be pissed, so why update it. Look at the MBP 13". 😉
The MBA hasn't truly been updated since October 2008. The 2009 spec bump was simply a matter of Intel offering 1.86 for the former 1.6 and 2.13 for the former 1.86. The USB -> Ethernet offering really wasn't a bump. The motherboard stayed the same. Ram stayed same. GPU stayed same. Drive stayed same. Display got worse (used only low-end model from rev "B" offering). And case stayed same. Battery got less than 3% bump too... but I am certain that was to attain some "gold" or "energy" star requirement.
However, the MBA has improved so much by Apple really focusing on the drivers. OpenCL has improved tremendously. SSD drivers have made the drive much faster like the Runcore.
There is a hint of a possible update in the fact that it seems Apple has upgraded the SSD in the latest releases of the MBA. Apple does these quiet bumps to products sometimes right before they get updated. I am thinking of the unibody MacBook that got the high end displays about a month before Apple switched it over to the 13" MBP and marketed the higher quality/gamut displays.
There is hope, but looking at the big picture doesn't really say much at all. Unfortunately, Apple has let its entire Mac lineup get terribly old and lags behind PC offerings more than ever before. The MBP needs another update, again. The MacFive all need real CPU upgrades... and in the long-term there's hope that Nvidia and Intel settle their dispute. If Apple waits long enough to upgrade the MacFive, it can probably go ahead and use Nvidia in them still/again.
I say 15% chance of an MBA update in the next three months. October or January seems a lot more realistic... assuming Apple will use the MBA to introduce what's beyond C2D for MacFive computers.
*MacFive = MB, 13" MBP, MBA, Mm, and 21.5" iMac. If everything holds true, the 21.5" iMac gets an Nvidia 320m today along with another C2D. If Apple switches the 21.5" iMac over to the MBP logic board setup it gets the 330 GT along with Core i5 CPU. I really think it makes a lot of sense to keep the 21.5" iMac at its current price range, so Nvidia 320m seems by far most sensible. The 27" is a completely different beast - one I love dearly.
Here is for not only a 27" LED ACD but also a 32/33" LED ACD to go along and forever change the Apple display offerings... sign me up for three of them! And if SJ really loves us MBA faithful, he will give us full capability to drive native resolution on those beasts from our mDP in the current MBAs.