ELK Studios is launching another online slot called “Black River Gold” on May 5th. 2020 . The promotional email from ELK Studios says the following:
Black River Gold is the fourth slot in the ELK Gold Series. It comes with two unique features, the Compass Wild and the Revolver! Avalanches allow the rows to expand all the way up to 8 rows and 262 144 ways to win.
As soon as there is more information from ELK Studios I will post it below.