Levels and XP - every match pays XP. Your level shows in the menu, on the scoreboard and on the results screen
Rifle finishes - unlock Desert, Olive, Arctic, Squadron (your team's colours), Crimson and Gold as you level up. Pick one in the new Armory, everyone sees it in your hands
Daily challenges - three new ones every day, the same for everyone, worth bonus XP.
Results screen - watch your XP bar fill, with a level-up moment and a note when a finish unlocks
Leaderboards - K/D and headshot % now count you after 20 kills (10 against players), and update while you play instead of only after a full match
Scoreboard - shows every player's level, and the rows are cleaner (dead players are dimmed, each team shows how many are alive)
Deathmatch mode - respawn in 2.5 s, every kill scores for your team, first team to the kill target wins. Pick Elimination or Deathmatch in match setup
Match length - Deathmatch comes in Short, Standard or Long (about 4, 7 or 10 minutes)
Spawn shield - 2 seconds of protection after you respawn, and you blink so everyone can see it. Firing ends it early
More spawn spots - every base has about 10, reshuffled every round so you start somewhere new
Bots vs movement - bots find fast bunny-hopping players much harder to hit and take longer to line up a shot. Rookies most of all, Elite still punishes a predictable line
Bot routes - each life a bot picks a lane to roam and hunt in, and teams spread over different targets instead of piling onto one
Bot jump-shots - bots tend more to jump sideways when they shoot and are optimized, more lively overall
Server list - online lobbies show their mode
Jump pads - bots no longer fly off the map after walking over a pad by accident
Divide - bots no longer bounce in place on the skyway pads
Nightfall - bots no longer get stuck behind the front cover (it moved back a little)