Eric Musco announced that the SWTOR Conquest Issues is Fixed before KOTFE
Originally it was expected that the developer team will look after Patch 4.0 launches for the bug and a resolution to the ongoing crisis with the Conquest rewards not being granted to a big chunk of the players and therefore creating chaos in the community.
This means that Conquests will be active and available after the launch of the expansion.
Here is Musco’s post:
Conquest Reward Issues and Fallen Empire | 10.14.2015, 06:22 PM
Hey folks,
I wanted to let you know that the dev team has found, and corrected the issue affecting Conquest rewards. This issue will be resolved next Tuesday, when we deploy Game Update 4.0. That means that you will be able to play Conquests normally and should receive both your Guild and Personal rewards as intended.
The Conquest event that ends next Tuesday may still be in a broken state (as this is before we have deployed the fix). If that happens, we will work on issuing those rewards at a later date.
Thanks everyone!
-eric