Complex sentence: In September 2007 the band announced their break up and are planning a farewell-tour across Germany with a final concert on 30 August 2008 in their home town of Hanover.
Split into simpler sentences: In September 2007 the band announced their break up. They are currently playing a farewell tour across Germany with a final concert on 30 August 2008 in their home town of Hanover.