A few weeks before their four character reveal at Gamescom, SuperBot Entertainment may have been preempted by some enterprising dataminers. Images today hint that PlayStation All-Stars Battle Royale may have had its files leaked from the current beta, revealing far more than the intended number of characters meant to be unveiled in mid-August. The characters include Spike (Ape Escape), Raiden (Metal Gear Solid Rising Revengeance), Nariko (Heavenly Sword), Ratchet, Sir Daniel Fortesque (MediEvil), Sackboy (Little Big Planet), the new Dante (DMC - Devil May Cry), and either Evil Cole, Nathan Hale, or Both.

Update: After the image was cleared up, it seems like it's evil Cole. This actually flies in the face of SuperBot stating that there would be one character per franchise.

Stages shown include Paris from Sly Cooper, Black Rock Stadium (Twisted Metal), Columbia (Bioshock: Infinite), Alden's Tower (Infamous), Invasion (Killzone) and a Loco Roco stage. The leaked image also includes a possible stage based on the Stowaway mission / plane stage from Uncharted 3. We'll find out if some of this is true in two weeks at Gamescom, but this is a pretty huge leak if true.

Update: The datamining also possibly leaked multiple modes and options that include

low gravity taunt_for_ap team_momentum pulsing_invisibility ap_on_respawn ap_loss_on_eject ap_loss_on_crumple ap_loss_on_twitch slow_down_trial smash_objects dodge_or_die king_of_hill team_bodyguard capture_the_flag team_elimination iron_fist ap_steal_on_kill sumo_ring (This will be something interesting for  smash players)
Update: The last 3 stages are confirmed to be
Stowaways (Uncharted)
San Francisco (Resistance)
and Timestation (Ape Escape)
Source: NeoGAF