I'm sure any need for a global fix for this would be implemented quicker than 1 week ahead therefore I doubt it is part of the server maintenance which occurs on a semi-regular basis as they correct issues or add new code. Sometimes the code added is in the background and users can't tell the difference.
An example of something that could be added is forgotten base levels. At present they're set when the world is started. An extra piece of code could be added to allow the developers to increase (or decrease) forgotten base levels in a given band or increase or decrease the guardian bases. I'm not aware of this being done, it's simply an example of something that a user would not immediately notice but would require a world going offline.