The tippy-top end of power in Star Wars: The Old Republic is due to change with the release of update 6.1.4 according to an announcement post made by design director Chris Schmidt, which explains that there will soon be a new tier of augments for players to chase.
These new augments will require materials from both Master Mode Operations and Ranked PvP, so players who want to build these new augments are either going to have to dive in to both PvE and PvP activities or take advantage of the Galactic Market to buy materials from others. Ultimately, the rationale for adding these new augments is to let any PvE guilds climb over the hump of previous Operations a bit faster and make some interest in Group Ranked PvP happen.
These new augments are due to arrive soon to the game’s PTS, but for now the forum post offers a few more specifics on materials and where to find them.