A copy of the Amtrak letter to UP is here.
http://groups.google...2549f9ffa?hl=en
Thanks for the link. Useful to see the actual wording of the agreement between UP and Amtrak on the 2 year period. Which costs Amtrak nothing, except keeping the 3 day a week service, because Amtrak will not have the equipment to add new service to any UP route in the west for the next 2 years.
California is studying a LA to Palm Springs/Coachella valley service, which would be a state supported corridor so does not fall under the agreement, but until CA orders and receives enough new bi-level cars to support it, they can't add the service. So, even if CA starts planning a service and brings Amtrak & UP into the process, official requests and agreements are probably more than 2 years off.
In 2 years, UP may have finished or be close to finishing the double tracking from LA to El Paso. The Colton Crossing flyover in CA should be nearly done as well. Will be more difficult for UP to demand exorbitant amounts of money with a straight face by then to run a daily SL.