I'm sure there will be some weathertech ones soon enough, but for some reason a lot of those types of manufacturers have been slow to release products for the Land Cruiser. Floor liners, seat covers, etc.
I know a lot of auto manufacturers give aftermarket companies like that early access to the vehicles, but I'm not sure if that happened here. The Land Cruiser has been out and in the wild for about 4 months at this point, give or take, and you'd think something like floor liners would be available by now.