Aside from general server stability improvements, players can also expect to see more active random encounters. Although these encounters no longer reward keycodes since the "Sharks in Winter Solstice" patch, players can still complete them for scrip.
Larger problems like losing items in the salvage matrix and loadouts not saving properly have also been "improved." PvPers should be pleased to see the correct capture and hold results at the end of a match now making the new episode pursuits completable. Finally, missions will only offer credit if a player actively participates in the mission now. With this change, leech camping might be somewhat rectified.
"Defiance" is available on PC, Xbox 360, and PS3. Check out some "Defiance" impressions here.