The project incorporates a mix of previously teased tracks and unheard songs, along with a cover of Tracy Chapman's ‘Fast Car’.
Wallen's other two new singles, ‘I Wrote The Book’ and ‘Everything I Love’, join ‘Last Night’ in the Top Ten.
Fleet and Watkins will be joining Zac Brown Band on the final day of the Chicago festival.
Gorley joins the already-announced Lainey Wilson, Nate Smith and Dalton Dover.
The new track serves as the follow-up to Zimmerman's heartbroken ballad, ‘Get To Gettin’ Gone’, which he released on December 23.
The War and Treaty, Ricky Skaggs and more also performed on the all-new Opry stage.