If you bought the Second Pocket Universe / Town Expansion tier during Octoberbit and filled out the survey, those have now been delivered / expanded. If you didn't fill out the survey yet, please do.
Have been expanded, enjoy!
Second Pocket Universes
You can get a list of your pocket universes with /listpockets, it will show a map id for each pocket you own.
You can then teleport to each pocket with /telepocket <map id>, ie: /telepocket 123456
In your inventory, you will find a brand new Townstone. Place that in your pocket where you like, then return to the survey. On the main page, there is a new reward option: "Second PU - I received it and placed TS, now ready for expand." Submit that to notify me that you are ready for the town expansion to 5x5.