Complex sentence: The album was eventually pushed back to May 2006 and eventually October 2006 due to unspecified issues between the label and band, but by the summer of 2006, both sides had cleared up any disputes, freeing up the latest album.
Split into simpler sentences: The album was eventually pushed back to May 2006 and later to October 2006 due to unspecified issues between the label and band. However, by the summer of 2006, both sides had cleared up any disputes, freeing up the latest album.