We know they're getting ready to release a trilogy of new albums, which makes it seem a little greedy to wonder what Green Day will do next -- but if an image that recently surfaced online is to be believed, the band is planning a full-fledged tour in support of all that new music.

The alleged tour poster doesn't give away much -- it features blank spots where all the dates should be -- but it does make it look like Green Day is prepping a U.K. tour (and a fairly lengthy one at that). We already know they'll be in Europe later this year, with festival dates lined up in France, Germany, and Italy in late August and early September; a string of U.K. dates either before or after would make sense -- particularly with '¡Uno!,' the first installment in the trilogy, scheduled for a Sept. 25 release.

In the meantime, as Stereoboard notes, U.K. fans have the 'American Idiot' musical to look forward to: Starting in mid-October and running through the end of the year, the Broadway hit inspired by their 2004 album will be playing in select cities, including Dublin and London.

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