Source? This is what they said during one of their earnings calls:

Barclays Capital – Question about $35,000 price point – before or after tax credits?

Deepak Ahuja (CFO): The $35,000 does not assume that the $7,500 federal tax credit is no longer available, but that the 35,000 Tesla Gen 3 pricing is without any subsidy.

Elon Musk: Helpful to have credits, but Tesla is not counting on them.

The tax credit applies for the first 250,000 (domestic?) units per manufacturer though, so if you pre-order a Model 三 you might be able to get it for $27,500.