It looks like pop punk hitmakers Green Day are working with Rovio on a pig-centric supplement to Angry Birds Friends.

The band posted an update on its Facebook and Twitter accounts saying: "Green Day has been hanging with Angry Birds Friends... stay tuned for more."

The message was accompanied by a link to, which whisks the clicker off to a holding page bearing an image of a pig with wings, a "coming soon" placeholder, and a link to the Angry Birds Friends Facebook app.

Going by the hashtag which followed the posting (#greendaypigs), we're guessing that the appropriately coloured swine are going to take centre stage in this latest Angry Birds expansion.

Whether it has anything to do with the rumoured 'Angry Pigs' spin-off we reported on last month, however, remains to be seen.

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