http://www.newsweek.com/call-duty-black-ops-4-update-103-halloween-black-market-patch-notes-1179237

Call of Duty: Black Ops 4 update 1.03 is available now on PS4 and PC, and will be rolling out to Xbox One soon. The sizable download is just under 9GB on PS4 and slightly smaller on PC. Patch notes are not available at the time of writing, but Treyarch tweeted about the contents of Update 1.03 Thursday evening.

Tomorrow, we're releasing a substantial update to #BlackOps4 with a host of improvements, fixes, and additions across all modes, including new stability fixes for Zombies. We’ll also kick off our first 2XP Weekend, along with 2XP Nebulium Plasma in Zombies! More details soon.