Update: Unfortunately, it really was a mistake. DICE has responded to these rumors, and the reply is posted below, as seen at GOONL!NE:
"Contrary to rumors spreading around the Internet…we have no plans to release Battlefield Heroes on either the PlayStation 3 or Xbox 360."
Originally, Battlefield Heroes was only announced for the PC, but recently uncovered evidence hints at the distinct possibility of a console version as well.
According to GOONL!NE , EA's press site now lists the game for both the PlayStation 3 and Xbox 360, which comes as good news to all you Battlefield fans out there. However, the game holds a June 2009 release date and is still waiting for a rating from the ESRB, which means we may not hear about it for some time yet. Also, September 2009 may be the actual release date for the PC version; the game has suffered through a series of delays thus far, so there's no knowing what may happen next. For the record, this title is being developed by Swedish developer DICE, also responsible for last year's Mirror's Edge and the upcoming and highly anticipated Battlefield: Bad Company 2 . Heroes is kinda like a more lighthearted, cartoon-y project that may appeal to a wider and perhaps more casual demographic. It would make for a nice addition to both the PS3 and 360's library, but we can't confirm anything until either DICE or EA makes an announcement of some kind. Really, the listing on the press site for a console version could just be a mistake.
These days, it makes far more sense to release a game across all available major platforms and most publishers will certainly agree. So let's just cross our fingers…