Guns N' Roses will play an expanded 20-city tour along with the previously announced set of six reunion shows, their publicist confirms.

Shows will take place in Atlanta, Boston, Chicago, Cincinnati, Dallas, Detroit, Houston, Kansas City, Nashville, New Orleans, New York, Orlando, Philadelphia, Phoenix, Pittsburgh, San Diego, San Francisco, Seattle, Toronto and Washington, D.C. Venues and dates are still forthcoming. UPDATE: St. Louis, an originally announced date, has been retracted by band reps.

Fans have been eagerly tracing these developments. One posted an Instagram note indicating that Axl Rose confirmed a lengthier tour with fellow founding members Slash and Duff McKagan.

Others began reporting the appearance of Guns N' Roses billboards around the country earlier today, speculating that a U.S. tour was coming soon. It's similar to a move that the Rolling Stones employed to pique ticket-buying interest.

The first of Guns N' Roses' previously announced shows are set for the weekend of April 8-9 during the opening of Las Vegas’ new T-Mobile Arena, with Alice in Chains serving as the opening act. Following those concerts, Guns N' Roses had already confirmed appearances at the Coachella music festival in Indio, Calif., on April 16 and April 23, with shows on April 19-20 at Mexico City in between.

There has been no word on who will open the other concerts, and plenty of speculation on who might be joining the three founding members. (Much of the talk centered on guitarist Richard Fortus, drummer Frank Ferrer and keyboardists Dizzy Reed and Chris Pitman.) A signed drum head seemed to outline who might also be on stage. But then the cancellation of a show by GNR alum Steven Adler and promise of a big announcement by the Whisky A Go-Go rekindled hopes that he'd be on stage too.

Most recently, there was talk that Rose could be in the running to replace Brian Johnson after the long-time AC/DC frontman was sidelined with a hearing issue. A rep with AC/DC said nothing was confirmed as recently as yesterday.