About the Exploratory Missions Update from Patch 3.4

I dont know if this is the correct board, but i was reading the Live Letter Diggest and I'm trying to understand this part:

Exploratory Missions
We will be changing the matching requirements and changing the exchange rate for spoils. For those of you who currently possess spoils, please exchange them before Patch 3.4. Additionally, we will be adding item level 235 equipment.

That means the actual spoils will be chanced for another one and I will not be able to use them after the Patch? Or this means that i have to change them for itens to avoid be easy to get the new ones? I'm really trying to get it this...

For me, it seems like the exchange rate and the prices of current items may change, and that change might not be for the better, so it's better to exchange any gear for spoils now. They will be adding 235 gear to the Diadem it seems, so I assume the amount they will give will be the same as what 210 gave.

However, this is just my own speculation though.