It is according to a mum I met at BabyCafe this morning.
She insisted (loudly, to our end of the room) that the advice has changed, and that "several of the girls" had recently been advised by Health Professionals that it was ok to put baby rice in a bottle, from age of ~4 months.
I privately reckoned that the woman saying this was mad, but perhaps I am the one who is misinformed?