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I don't see why not as the MBA is less than 6 months old. I fully expect my last gen 24" iMac to as well
 
just wondering. Even the 64gb 2gb ram 11"?

will it be larger or smaller than snow leopard?

No Apple are evil and they released computers in October 2010 that are utterly obsolete in Summer 2011.......



;)



But in all seriousness. Yes your MBA should be fine for Lion, no one knows about install size, but you can always shave off a few gigabytes of installation size by custom installing, and getting rid of printer drivers and foreign languages.
 
no, once a lion sinks it's jaws into a MBA it's be toast, have you see the fangs on a lion?
:p

In all seriousness, I don't think the OS upgrade will be a huge jump in size, I'd be more worried about running out of space for other files etc if you had the 64GB MBA.
 
it will run, but will it run smoothly? that's up to Steve. Wait.. he is not there. He is on break. No, it won't run.
 
It definitely should be able to. No way apple would release a computer and then half a year later release an OS that can't run on it.
 
The Snow Leopard installation is only 12-20 GB in size, depending on apps installed, so there is considerable room available on a 64 GB disk (unless you have huge music or photo libraries). I doubt Lion will be significantly different in installed size, so you will be fine.
 
In a similar vein, Snow Leopard runs like a dream on the 06 Macbook I sold to my mate!
 
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