According to an article and information on the Rampart Casino's website (here's a link to their info page):

https://www.theresortatsummerlin.com/faq/index.php

The Cannery has been running the Rampart Casino for the past 10 years but will be stepping away April 1st. The current slot cards will continue to work during the transition but new cards are anticipated later this year when they re-launch a new players club.