The latest release is only a few days old but already are all our products are running it. One major change has been to cut down the boot time, though of course the faster the drive, the faster the boot time. After talking with some of the Canonical guys at the Jaunty launch party, it seems boot time is measured from just after grub boot loader until the login screen.
The new Aleutia D1 comes with a dual core Intel Atom CPU, 2GB of RAM, and integrated dvd burner. With a 30GB OCZ solid stated drive we've installed for a customer in the Gambia, it boots up in just 19 seconds.