Comparison of high definition optical disc formats Blu-ray disc players since the end of the format war. Blu-ray Disc has a higher maximum disc capacity than HD DVD (50 GB vs. 30 GB for a double layered disc). In September 2007 the DVD Forum approved a preliminary specification for the triple-layer 51GB HD DVD (ROM only) disc though Toshiba never stated whether it was compatible with existing HD DVD players. In September 2006 TDK announced a prototype Blu-ray Disc with a capacity of 200GB. TDK was also the first to develop a Blu-ray prototype with a capacity of 100GB in May 2005. In October 2007 Hitachi developed
Understanding What We've Grown to Be Be". On April 9, 2013 the album was reissued in a deluxe physical edition, featuring their three most recent singles 'Hope', 'The King of Silence',' and 'Let These Words Last Forever' as well as a DVD of tour footage, interviews and live performance segments. "Understanding What We've Grown to Be" was recorded during two sessions, the first being from February 16 through March 10, 2011, and the second being from May 16 through June 23, 2011. On June 22, the first single <nowiki>"Mis//Understanding"</nowiki> surfaced through Equal Vision' official YouTube channel. A day later, the title track was also released for