The good news
If you use Fedora 13, we fixed up some bugs and you can now mount your iPaid (private joke) on the desktop, and have it show up with a spiffy icon. All the updates are in updates-testing.
upower got the ability to tell you your battery status when plugging in an iDevice, though you'll need gnome-power-manager from master to see it, and even then, it won't show up on a desktop system without a UPS. Still some UI problems to iron out there.
gvfs will now warn you about the device being locked. Again, this change is only on master as it adds new strings.
nautilus-ideviceinfo is nearly ripe for consumption after my wad of bug fixes. I expect the code to move into the GNOME repos soon after the first release.
The bad news
Still no video, music or e-books syncing on the tablet iDevice.
No support yet for the per-app documents syncing. If you have a jailbroken device, you can use iFile to move your documents to the Documents sub-directory of /var/mobile/Applications/application-UUID
(make sure to turn on "Application names" in the preferences).