Destiny’s 1.1.1 patch arrives today, so if you have been kicked from activities, it means you will need to download the patch now that it’s live.
We will be pushing the 1.1.1 patch for Destiny shortly. Players will be kicked from activities and required to download the patch.
— Bungie Help (@BungieHelp) February 25, 2015
The big changes in the update include balance tweaks to weapons, heroic strike matchmaking, a reputation UI, enemies in Crucible no longer dropping heavy ammo, and more.
Destiny patch 1.1.1 should be made available for download soon, so keep an eye on @BungieHelp for intel.