UPDATE: We recently added images showcasing the Republic faction's Operations gear. You will find these images on their respective class pages.
Three tiers of Level 50 PVE gear appeared in the 11/26 patch: Tionese, Columi, and Rakata. Darth Hater spent some time poking around in-game and analyzing client data to attempt to determine how one could acquire some of the highest item level gear sets. All items included two- and four-piece set bonuses that curiously displayed only when the item is equipped; these set bonuses were mainly buffs to existing abilities and not unique to a particular tier.
So far, set names remain consistent to combat role through item progression, and carry a unified look throughout so you don’t look mismatched or out of place. Armor set names were the same for both factions, and we do provide some low-res preview images of both the Imperial and Republic versions of the sets on each class pairing page. It is confirmed that the Republic versions of the armor sets look different, and keep in mind Imperial Agents use knives while Smugglers use shotguns.
We would like share what we found, and encourage comments if you believe anything is inaccurate or have any additions, as we’re happy to credit you for any legitimate finds.