This thread seems to be going round and round with people not reading earlier posts.
Toyota GB has had GF5 standard since launch, which isn't to spec but they seem it 'acceptable'. GF-6A needs to be provided, some Toyot dealers will be happy some won't, some like RRG even supply GF-6A from miller's/fuchs.
Any decent indy can do this if you prefer, there's a tick box sheet to maintain warranty, no it won't be 10 years, just the 5. Keep the receipt of the oil purchase showing the spec to go hand in hand with this.
That's the choice we all currently have to go through.