Okay, but then I need to ask what specifically was broken that ML fixed? (In my experience, I tried ML on my 2011 Air, but battery life sucked compared to Lion, so I downgraded).
In either case, if you're right and it'll have to take a Maverick upgrade to fix this, my MBA is long before returned to sender.
I just received it some hours ago, and so far I haven't been able to really test wifi, audio fluctuation or Photshop brush issues (except so far with this WPA2-based ASUS-backed wifi, it's been stable). My first setup I thought I could mount my iSCSI-based Time Machine backup and migrate after the setup assistant, but "duplicate user name" — d'oh! Then a re-install of OS X with a USB-based time machine fed to the setup assistant. Beach balls galore in Finder, a reboot and it never reached the desktop. Trying a re-install once more made the laptop hang after 15 minutes, and a hard reboot resulted in having to do an internet based reinstall. Currently running.
Apart from that, the keyboard seems quite crappy compared to my 2011 MBA. Squeeky sounds and a right Alt key that just seems to float around. Actually, the entire right side of the keyboard seems shabby.
Oh well, I'll stop ranting about that crap. What I wanted was to ask specifically what ML fixed. And then I'll return with a status once I've tested wifi and whatnot properly. I'll be doing a Win7 bootcamp install as well, so if any issues arise in OS X, I can compare to that.
Sorry for the rant.