The age of pirates ended and started up once more with Straw hat Luffy finding and then re-hiding most of the treasure hidden by Gold Roger [with 30% taken by Nami of course]
"I had my adventure! And who says that the pirate age is over? Not me! I re-hid the treasure, so that [i]you[/i] can find it this time! Have fun!"

So this is the era after Luffy found and re-hid the treasure. The Devil Fruits have all been scattered once more with the deaths of those that held them.