Members of at least one Amtrak passenger forum online are reporting that the Silver Star will remain without a diner until at least the end of April 2016.
See this thread on the Discuss Amtrak Trains Forum: http://discuss.amtraktrains.com/index.php?/topic/66241-new-no-diner-extension-new-points-calculation
FCRP reminds passengers that the end of a diner on the Silver Star may be a prelude to seeing this practice carried out on other trains. We encourage you to contact Amtrak and your elected officials to express your concerns about this practice.
For more information on how to contact your elected officials and this experiment, please read our earlier post on this subject.
--Jackson McQuigg