I wonder if this would have resolved the kernel panics on my 13"? Interestingly, I had the wake-from-sleep issue on my original "Ultimate 13". A few days after I swapped it for a new model at the Apple Store, Apple released the EFI 2.0 update. The new model worked great but kernel panicked a lot (particularly after running Parallels). Apple eventually replaced the logic board last week. A few days later this software update comes out, supposedly to address "performance issues" and "kernel panics" with the MacBook Air.
Overall, the new MacBook Air is a vast improvement over the Rev A and Rev B. However, I'm a bit surprised by how many bugs they are having with them considering that none of the components parts are very new (apart from the Toshiba SSDs).
That said, I'll see how my "new" refurb 11" Ultimate holds up. So far, so good. Hopefully the new owner of my Ultimate 13" has good luck with it.