I now hesitate to comment much regarding new Sunset projects as the list of demands from this forum often grows beyond what can become a realistic and reasonable project and actually be produced. However, I will state that like all new product announcements, this is an evolving process. For those that are not familiar with the 3rd Rail / Sunset process, buyer input before the project is finalized is not only common, it is welcome.
Having said that, the project will most likely be just ALC-42s and SC-44s. They are essentially the same locomotive with different noses and some other fairly minor variations. The Brightline and VIA versions are different enough to require different tooling and there are not likely to be enough orders to cover the changes required for that tooling.
Graphics for the website are in progress. Three ALC-42 paint schemes will be eventually on the page; Phase VI, Phase VII, and 50th Anniversary "First Day". Please be patient and give the process a few weeks.
SC-44 schemes could be added. The Pacific Surfliner is certainly a possibility as is the Siemens demonstrator scheme. Send your interests to 3rd Rail and the order page will evolve as it always does. If you have placed orders there is always an opportunity to modify that order up until the time reservations close which will be a while from now.
Personally, I am very excited for this project and the opportunity to be a small part of bringing this very modern locomotive to the O scale market.