Test server build has been deployed to live servers this morning
The patch that has been uploaded to test servers a few days ago has been transferred to live servers early in the morning. This has been scheduled by the dev team via their twitter account:
PC players, there will be a 3 hour maintenance period on our live servers starting at Apr 18 7PM PDT / Apr 19 4AM CEST / Apr 19 11AM KST. We will be moving our current test build over to live.— PUBG Help (@PUBG_help) April 18, 2018
You can check out all the details of the update in the full changelog.
As usual after the update ingame voice chat has been broken for a few hours, but its already fixed.