The Awakening DLC is live for downloading now on PS4. There are three new maps and a remake of Hijacked from Blops 2, Skyjacked.
On the Zombies side, the Der Eisendrache map is available for players. It continues the story of the original survivors (Tank Dempsey and so on).
Map lockout feature added to multiplayer. Players can no longer infinitely vote for a map they just played on (so sorry if you liked Combine 24/7 =P ).
Friendly fire kills from your AI-controlled Scorestreaks will no longer get you kicked from Hardcore matches. These include friendly fire kills from Cerberus's Patrol Mode, Talon in Escort Mode, Wraith, RAPS, and GI Unit (Patrol and Escort modes).
Friendly Scorestreaks that are attacked by teammates will no longer incur damage from friendly fire in Hardcore modes.
Spawn fixes in TDM and Kill Confirmed. Lightning Strike spawns are also fixes to coordinate with their explosive blast radius's.
Combat Records are no longer private. Anyone can look up records of anyone else.
Nomad - Rejacked buffed slightly. You will get up faster after triggering Rejacked.
Reaper - Slightly nerfed. Repear's footstep audio now matches other specialists with and without Dead Silence and/or Awareness equipped (pre-patch Reaper had Dead Silence built-in).
Specter - Nerfed. If you're killed after triggering Ripper, a lot more of your Specialist gauge is lost on being killed while Ripper is active.
Weapons, Perks, and Attachments:
Rapid Fire buffed/nerfed across all weapons.
FMJ: No longer does increased damage to the Safeguard robot (FMJ doesn't recognize the robot as a Scorestreak).
Awareness: Nerfed. Enemies now need to be closer for you to hear them.
SMGs General: Slight nerf. Sprint-out speed reduced for all SMGs.
Assault Rifles: ICR, XR-2, and Sheiva has ADS accuracy increases. XR-2's recoil reduced slightly.
Shotguns: Argus and KRM - Lethal damage range extended. You can one-shot people from farther away now.
LMGs General: Slight buff. ADS accuracy improved for all LMGs.
Snipers: Locus has a slight buff. ADS accuracy improved.
Cerberus, Hellstorm, Mothership, RAPS Deploy Ship, and GI Unit all buffed. Air support all have health/extra flares so it takes more rockets to bring down (nerfing the BlackCell and the other rocket launcher).
You can read the full changelog at the link above.