Devil May Cry 4 Collector's Edition contains the following extras:
* Volume 1 of ADV Film's Devil May Cry: The Animated Series on DVD, including four complete episodes of the anime
* Unique Steelbook™ metal case
* Bonus DVD
* Making of Devil May Cry 4
* Music from the soundtrack
* Digital artbook
* PC content (screen savers, wallpapers, icons)
Nothing like new characters or more playable ones, but this is good too.^_^