So we got our first official update from Chris Roberts since December 2020 yesterday, and it's quite interesting. They reportedly had the first successful test of their new microservice persistence backend last week, and plan to move the game over for 3.18. But since they had an unexpected influx of new players since 2021 (some big Youtubers have picked up the game, so they get unusual amounts of positive coverage lately), they don't want to release updates with minimal testing as they did in the past. Instead, 3.18 will enter testing as usual, but remain in PTU for much longer, probably until late Q3. To keep things fresh on the live servers, they plan a major 3.17.2 content patch for late Q2, around the time 3.18 live was originally scheduled. Similar things are planned for the Q4 patch, as 3.18 is currently intended to be the last 3.x release. Server meshing and interstellar travel should enter testing at the end of the year, leading up to alpha 4.0 in late Q1 2023 if all goes well (it probably won't, but we'll see).
Chris sounded pretty confident in the letter, and they even decided to drop the Citizencon keynote this year (which is big for funding), as he feels they're close to the biggest milestone in years and don't want to waste time on a flashy presentation, especially since two of their studios are also moving to new locations in the coming months. Citizencon will still happen, but it'll be virtual again, and there will only be minor presentations and discussions, no big keynote.
Chris also confirmed that the Austin and Santa Monica studios will be moving to larger locations starting late next year, to accommodate more staff.