I just wanted to add to this: I visited my dealer (Toyota of Orange, CA) last week for scheduled service, and I reported the brake squeal to the service manager. They tested it and confirmed they heard the squeal. Regarding a repair/service, the service team informed me that Toyota is aware of the issue and that the repair will come in the form of an entirely new brake kit. What that means specifically, they do not currently know, but there will be a fix, though it will be several months at least until this is available. They documented my issue and I'm told it was reported (along with another case) to Toyota. Further, I was told LC owners will be notified when the fix/kit is available.
The good news is at least Toyota is aware and it seems they are not brushing it under the rug.
I hope this helps.