Destiny Update 1.0.2

 addresses widely-discussed concerns with how Engrams are earned and claimed and makes Strikes more rewarding and the rewards more predictable. Crucible map rotations are also affected.

Cryptarch

 * Legendary (purple) engrams will always produce a Legendary quality item or higher
 * Note: Legendary engrams that exist in your inventory will change to Rare quality items when the patch is applied. However, decoding these engrams will still produce the same results as before
 * Rare (blue) engrams will always produce a Rare quality item or higher
 * Chance for Legendary gear increased
 * Materials: Ascendant Shards and Ascendant Energy promoted to Legendary quality (from Rare quality)

Rewards

 * Rare (Blue) and Legendary (Purple) Engram drops added to the potential rewards for:
 * Vanguard: Tiger Strike Playlist
 * Daily Heroic Missions (first time per day)
 * Weekly Heroic Missions (first time per week)
 * Known issues
 * When selecting a higher difficulty for daily missions, XP Bonus not show in the reward display
 * You will still get the XP bonus, you just won't see it in the UI

Crucible

 * Reduced time limit on Bastion and First Light in Control and Clash from 15 to 12 minutes, bringing them in line with non-vehicle maps in those playlists
 * Lowered weighting on Bastion and First Light in Control and Clash so they appear less often in those playlists