I'll agree that the early release of DLC seems a little sneaky, but knowing the BUNGIE team and knowing how intently they work towards game quality I can imagine they are attempting to give the world a bit of an extra boost for those gamers who will power through everything within the first 2 months. Knowing the size of the game, and how quickly I powered through 3 different characters to level 8 and managed to get one of them completely maxed on gear in the beta, I imagine a bit of DLC would be nice. I imagine it's stuff they wanted to get out on release but had to push back due to time constraints. This will most likely be a timeline that allows them to expand even further on what they can fit into the DLC pack, as it will be stuff they've most likely already been working on.