I believe the consensus is that the new Model Y RWD is LFP from China, the same vehicle that was being shipped from China to Canada recently.
Side note that the new trim isn't currently on the IRS list of IRA eligible vehicles, the list contains the Model Y AWD but there's no RWD trim. But the Tesla website applies the $7500 credit, so maybe the IRS list just needs to be updated.
If it does qualify for the IRA credit, I'd expect that to be cut off in 2024 as batteries containing any Chinese components are supposed to be disqualified from any credit. This trim might be sold for three months only, or something else might happen.
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