Archon,

New discoveries made by our Artisans will now allow you to upgrade the following Buildings to Level 41:

- Lumberyards
- Forges
- Farms

Warehouses and Granaries, meanwhile, can now be upgraded to Level 31.

Bear in mind that, once Buildings reach a certain Level, you will need Upgrade Sketches to further upgrade them.
But as you reach those higher Levels, you will unlock special Bonuses, so it is certainly worth your efforts.
Do not let the Artisans' work go to waste!

Basileus Leonidas