Amazon has confirmed which worlds will be merging within New World servers in US-East, US-West, Australia, and Central Europe.
Community manager Luxendra advises that there will be "two separate times listed for these merges", "one for preparation and one for execution".
Dozens and dozens of worlds are affected - enough that I can't list them all here - but you can check the changes for your region on the official forum.
"As a reminder, once in-game messaging is posted, players in these worlds will not be able to transfer servers," the post explains. "They will see a banner at the bottom of their screen reminding them of this merge when they enter the game."
Any worlds not listed are not scheduled for a server merge at this time and the team will be monitoring mergers "as it happens" to ensure any issues or problems are swiftly resolved. The mergers are expected to take place across 20th and 21st December.
"From fighting your opposition in wars and invasions, to hanging out in the local tavern, we've found that a healthy realm provides more opportunities for players to enjoy the world of Aeternum," explains the FAQ that details why some worlds need to be merged.
"In general, when our data shows that the experience in the world has become suboptimal, the team will investigate why conditions changed and if a merge is needed. Part of our investigation includes work to find the most suitable counterpart for worlds destined to be merged, helping to ensure your time in Aeternum is fun and socially exciting."
MMO New World has seen its aggregate user reviews on Steam fall from "mostly positive" to "mixed" in the last 30 days. Feedback seems mostly to criticise the game's "grind" and its litany of bugs and issues. A couple of weeks back, Amazon even said it would take "remediation steps" against New World players who "egregiously exploited" the irritating coin duplication bug.
The drop in ratings is further compounded by recent news that despite hitting an impressive all-time concurrent peak of just shy of a million players on 3rd October, New World seemingly lost more than half its player base just a month after its launch on PC.