Garmin Autoland is emergency only autoland. Not to be confused with CAT II/III autoland used in normal operations.
From Wikipedia: "The feature is activated by a guarded red button on Garmin G3000 NX avionics, evaluating winds, weather and fuel reserves to select a suitable diversion airport and taking over the aircraft controls to land, it advises the ATC and displays instructions to occupants."
From the Garmin marketing site [1]: "Garmin Autoland. It takes complete control of the flight to land the airplane in an emergency where the pilot is unable to fly1."
I'm not exactly sure if this is the correct reference for CAT II/III autoland, but seems like the purpose of CAT II/III autoland is to land and aircraft when the pilot would otherwise have a hard time manually landing due to weather conditions (ie. limited visibility) [2]. But if someone has a more accurate description, please correct me!
[0] https://en.wikipedia.org/wiki/Autoland#Emergency_autoland
[1] https://www.garmin.com/en-US/autonomi/
[2] https://en.wikipedia.org/wiki/Instrument_landing_system#ILS_...
Edit: Just to clarify the reason for posting this versus just relying on the text in the press release, I was under the impression the announcement was for some fully-automated flight control system (ie. take off and landing without a pilot on board, a la self-driving cars) based on the press release not mentioning why the system would be activated.