For those who follow bungie's twitter feed, you may have noticed there recent post containing a "explosive" red barrel. This may mean nothing, and probably does, but is there not a slight chance that it is a item being modeled into there next game? Why else would they just have a red barrel lying around there office? Upon closer inspection, there are no markings or words on it, meaning it probably contains nothing, and why else would they have a empty red barrel lying around? This may point that there next game is set in modern times or the future, and it is a action style game (all ready confirmed), possibly a first person shooter. Keep in mind all this is just speculation and only has a slim chance of being true.
Link to twitter post for those who haven't seen:
http://twitter.com/#!/bungietweets/status/160443046683615232/ photo/1