Destiny is slowly returning from the collective bacchanalia and getting back to what really matters: giving players guns so that they can shoot aliens in the face and then get better guns to shoot bigger aliens. If you've already gone through Crota's End and are waiting for the hard mode, for example, you should know that it's almost done and should be going on to the live servers soon, although there's not a concrete date yet. It's all in the game's most recent developer blog.
Players can look forward to loot updates in Vault of Glass and system changes in Crota's End as soon as January 13th, which should help soften the delay. The blog also contains information on guns, specifically on the most popular sorts of weapons that players are toting around to use during their alien-shooting sorties. Check out the full update for more details on the patch adjustments and future PvP rotations.