Supporting two-player co-op, Case West will see DR2's Chuck team up with photojournalist West to investigate the sinister pharmaceutical company Phenotrans. If you don't have any mates, though, Frank will be invulnerable and controlled by the AI.
Frank's photography will return, while Capcom teases that we may also "expect to see cameo appearances from other characters from Dead Rising." In the way of new things, there'll be more survivors, items, enemies and combo weapons, including the 'Reaper' and what Capcom describes as "the janitor's favourite," the 'Zap & Shine.'
Capcom has yet to announce a price for the Xbox 360-exclusive epilogue, though for reference the prologue Dead Rising 2: Case Zero cost 400 Microsoft Points ($5).
I'm really looking forward to this. Me and my buddy are doing our "second" playthrough to get all the survivors and mop up achievements, and we just reached rank 50. I really hope that we keep the rank/upgrades for the DLC...