Bungie has announced that owners of a PlayStation Network accounts can use those details to create a Bungie.net account. This is part of a wider move by the former Halo developers to reach out to more players for future projects.
The main project that Bungie is currently hard at work on is Destiny, the next Sci Fi game whose details all come from leaks and speculation. Bungie themselves havent officially released actual gameplay information about Destiny, so far content with a few images.
Destiny will be a cross platform title, which explains why PlayStation users can now get a Bungie account, but its still not clear whether Destiny will solely release this generation on the PS3 and the Xbox 360. It seems more likely that Destiny will bridge console generations, releasing both on this and the next generation of consoles.
Im personally expecting Bungie and Activision, who will be publishing Destiny, to start with the big information reveals within the next couple of months, maybe with an actual gameplay reveal at E3 but, like everyone else, Im just speculating.
Source: Bungie