Features the N7 Slayer, Piranha, and Firebase London map. Slayer is the new Vanguard, have a sword-based heavy melee, and has teleporting dodges akin to Asari's.
New abilities: Phase Disruptor (Uses up some barrier to fire a biotic beam at an enemy; no cooldown) and Biotic Slash (Empowers a sword with biotics to slash enemies. Basically Kai Leng's Thessia projectile.)
Features the N7 Destroyer, Typhoon, and the Firebase Rio map. Destroyer is the new Soldier and has a unique AoE-type heavy melee like the Asari's.
New abilities: Multi-Frag Grenade (It's as it sounds, though the Destroyer "shoots" it from a wrist compartment from what I can tell.), Missile Launcher (Basically shoots a projectile with cooldown. Hopefully won't be as powerful as the equipment Missile Launcher.), and Devastator Mode (Not sure what this does, although it gives you a neat Terminator-style display.)
Features the N7 Shadow and Escort Mission. Shadow, the new Infiltrator, has a similar heavy melee to the Slayer, apparently, as well as acrobatic dodges a la Drell.
New abilities: Shadow Strike (Works like Kasumi's- you teleport to the enemy's location and smack 'em with your sword. Could be very powerful.) and Electric Slash (Basically biotic Slash, except with electricity.)
Features the N7 Darth Revan- I mean Fury- and the Firebase Vancouver map. Obviously the new Adept, the Fury has similar dodges to the Slayer, biotic-centric melee that make the Fury teleport after every strike, attacks and a TELEPORTING heavy melee AoE attack.
New abilities: Annihilation Field (A new "armor" ability that acts as an aura that damages enemies in close proximity. When activated again it causes a small explosion. Can also set up biotic detonations.)