Sean C. Morgan
The Oregon Jamboree last week announced Dierks Bentley as its second headliner Sunday for the 2020 festival.
The Jamboree also announced, on Thanksgiving day, the return of the Nitty Gritty Dirt Band.
Festival Director Robert Shamek said the announcements were timed for Black Friday and Cyber Monday. They join headliner Old Dominian and Jessie Leigh in the lineup.
Shamek expects to announce additional artists soon, he said. At this point, the festival…