German radio station 1Live is giving away tickets April 27th - April 30th for a show in Cologne, Germany May 9th. The band has not confirmed any shows, but if you're in Germany and can listen to 1Live for the details to win tickets, it might be worth the shot if this ends up happening. Till then we wait for the official confirmation. Thanks to Hannes for the link

Update: GreenDay.de says two shows for Germany, one in Berlin on May 7th, one in Cologne on May 9th. Venues and a chance to win tickets will be on that site sometime this week. Translated version

We've gotten word about a few of the venues Green Day will be playing at for the US/Canada tour. Only 3 right now, which are listed on the tour page, we expect the rest to be announced around the first week of May.