Thanks for your reply.
I looked on the bottom of the box and this 2.0GHz i7 11" MBA has a copyright date of 2011. I thought these were new Ivy Bridge MBAs, released recently. But, it's an A1465, released mid-2012. Mountain Lion was released in early 2012. It really could have Lion on it?
(I was wrong about that. Mountain Lion was announced early 2012, released in July.)
I've requested the upgrade, but I might just go to the Apple Store and have them do it.
Here is Apple info on builds/models:
Looks like most MBA's except the very latest came with Lion. Once you register it online, it should show you more info. Also, if you go to System Information, check your model identifier.
And, FWIW, Macs have never been able to "downgrade" without completely erasing the disk first, so yours came with Lion. Now you can update it to ML...