Swtor 3.1.2 PTS has already been live, and a couple of new items are found in the PTS Patch 3.1.2, including Cartel Market images and more. They are likely to be part of the upcoming Explorer packs arriving in April. You can buy cheap credits for swtor us to farm them on 3.1.2 PTR.
Other updates in future

Conquest: Resurgence: Alderaan is now schedule for 31st March 2015.

New Cartel Market Reputation: Esstran Exports, which includes a Centrepiece: Second Grand Statue of Mandalore and a few other things.

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