System of a Down singer Serj Tankian has been very busy with other projects over the last several years.  As a result, System of a Down has not released an album since 2005.

That has rubbed some the wrong way.  Bassist Shavo Odadjian ranted about Tankian and the lack of new System of a Down music on Facebook earlier this year.

The band continues to perform, despite a lack of new music.  At a recent concert in Los Angeles, drummer John Dolmayan teased some big news.  At the end of the show, he grabbed a microphone and screamed, "Next time we come back here, we'll have a new f*cking album!"

Now, it could be a long time before System of a Down plays LA again.  Or this could be another example of frustration from band members and the lack of new music.

Or System of a Down could be working on a new album.  We'll see.