Ah ok, I found the Plarium table with the bonuses for the new building levels:

https://plarium.com/forum/en/throne-kingdom-at-war/667_game-database/593841_bonuses-from-buildings-of-levels-35-to-40/ 

But missing are still the full stats. The changed building attributes and bonus I can get from Vikings (*) - but Experience (hero and inquisitor) and Power (esp. of the levels 36-40) are still unknown since Vikings has different values than Throne... 

In example: Outpost 33 (to 34), 

• Defense bonus 30 % (*)
• Reach/range 30 km (*)
• Experience Hero 11,614,585
• Experience Inquisitor 11,614,585
• Power 110,000,000

The easiest way is to post a screenshot where the marked sections are visible: 

i

Unknown levels are (known ones are striked through): 

• 34 to 40
• 33
• 28 to 32
• 25 to 27
• 24
• 17 to 23
• 14 to 16
• 13
• 12
• 1 to 10