Short Answer: Williams by Bachmann
Long Answer: It is going to be a while before we see a Charger made in O Scale. From what I have heard, Bachmann does have an exclusive deal to make the Chargers in HO but they did jump the gun a bit. The Chargers that will be rolled out on Amtrak's nationwide route network will have a different nose cone shape (to make it easily interchangeable in the case of a collision) and larger fuel tanks. Additionally, Amtrak announced five of the Charger's Phase VI paint scheme to honor the company's 50th anniversary, another heritage unit that has yet to be announced, and the normal Phase VII scheme these units will wear has also yet to be announced. Maybe we know in May during Amtrak's 50th-anniversary celebrations what they will all look like. Siemens charges model makers a pretty penny to make their locomotives and that is why we have yet to see(n) MTH or Lionel take the plunge into making the ACS-64. Bachmann already having a deal in place to produce them in HO gives me hope that they will produce them in O Scale. My only hope is that they will be detailed models.
