I'm not sure about the rumored tour of Australia/New Zealand in November/December. Its possible. In terms of a general worldwide tour, I think that will have to wait until at least 2022. I don't think there will be a retro Achtung Baby/ZOO TV tour. I think Joshua Tree 2017 tour was a one off. In fact, I think a 40th anniversary tour for the Unforgettable Fire would be more likely, just because it would be easier to do, be in arenas, plus it would take place in a gap between the most likely album/tour cycles. A new album will probably be released in early 2022 with a new global tour. I suppose the album will be either the "Songs Of Ascent" thing, Rick Rubin sessions thing, or something new and different from those other two projects.