Looks like its been announced in Australia already:
https://www.drive.com.au/news/lexus-australia-recalls-more-than-14000-gs-is-and-rc-models/
I'm sure the chances of anything happening are low but its one to get done asap I guess! I wonder how quick Lexus will be able to get these done. Best call them first thing Monday and beat the rush to get it booked in.
The recall notice, uploaded to the Lexus Australia media website, says: "The involved vehicles are equipped with a fuel evaporative emission control unit (also referred to as fuel tank vent tube assembly) that is attached to the fuel tank by a flange.
"The fuel tank vent tube assembly prevents the fuel vapour that is created in the fuel tank from being released directly into the atmosphere.
"Due to the design of the flange, there is a possibility that a stress related crack could develop on the exterior surface of the flange. The crack could expand over time and, depending on the size of the crack, could eventually allow fuel to leak from the crack.
"Depending on the amount of fuel that escapes from the crack, and if it is in the presence of an ignition source, this could increase the risk of a vehicle fire."