Yes, i think its ine year of 12,500 miles, whichever cones first.
As it was explained to me, all the bug fixes, features introduced, options added are compiled and tested as a system, so anytime we take our cars in for any service, you get the latest, complete update.
In my case, it was exposing the Maintenance required light as an option on the mechanics console (not on the car system menu itself), so he could manually reset it. As I may have mentioned, it is supposed to be automatically reset from the Factory data center. But after a couple weeks, mine never did. I think I may have had one of the earliest Ghiblis in the South Eastern US, and I bet am among the first to rack up 12,500 miles, so who knows, maybe one of the bug fixes was for me :-)
When they download it, it's wifi connected from the shop computer to the receiver they plug into the harness/interface under the drivers side dash. He said it was a serial data push done asynchronously, and its done it a maintenance mode and by that, i believe it replaces the computer program in its entirety and then reboots on it.
It took 30 minutes. When it was done, he had a maintenance console where he navigated to a menu and turned it off.
I did not get the list of what was in the update but since he told me I had to have the car relearn my shift points, I betcha that transmission was one of them...