Sci-fi action game coming out in 2013.
Multiplayer focus, with character and weapon customization.
Worked on for a long time.
Multi-platform.
Equal or higher amount of physics interaction than Halo: Reach.
Possibly/probably space-combat, replay-editing and some form of world input editing.. (like base creation)
Speculated: Also on the next gen xbox, and with some form of cross-platform interaction.
(Maybe even a limited for of cross-platform gameplay)
The first Destiny will be Xbox exclusive, and the following titles will definitely be cross platform and on the next Microsoft console, that is not speculation. It is speculated that there will be replay editing and world input, but that's speculated entirely on Bungie having those features in previous games.
The replay editing feature is speculated based on the fact that when bungie pro, the server-farm for replay-rendering was closed, the message was that it would be back in the future.
Destiny won't be an xbox exclusive, but might be a timed exclusive, not appearing on other platforms until 2014. It will not be exclusive to one system, however.
The replay editor makes a great deal of sense. Not because it has been in halo games in the past, and because it's an awesome feature, but because the replay viewer itself is a really important tool for Bungie when it comes to optimizing bandwith usage in multiplayer matches.
When Bungie looks at host replays, they get the full set of data on everything the host sent to every client during the match, synchronized with the replay itself.
Sure, it's speculation whether or not they'll have it, but with the feedback importance in mind, and the message that Bungie Pro will be back (which included the replay rendering farm), the replay editor seems weird to leave out.
By the way, when you write cross-platform, do you really mean multi-platform?
And you say that the first Destiny will be xbox exclusive. I don't believe it will. Bungie is at their 2nd or 3rd week of crunch, now, working up until the holidays finishing destiny. (Edge magazine #250) They have hired people with experience on PS3 network engineering, which kinda seems weird to have working on a game if it weren't meant to come out on ps3.