The 9th Circuit Court of Appeals, which refused to reconsider the lower court's hold, deals with nine western states (map here). It has a reputation of being (a) very liberal and (b) very often overturned.
The Supreme Court typically takes its time, as it should. The issues they decide are very often of great weight. We won't have a decision for several months, perhaps as much as a year. See a Politico article about this case.