Namco Bandai care not for your cries of spoilers, and continue to release Dark Souls 3 materials with bosses in them. These are basically proper, full-sized versions of the images going around in Famitsu yesterday.
So, if the headline wasn’t enough of a clue, fair warning here; most of the images in the gallery below are at least moderate spoilers. They show pieces of equipment that’ll be in The Ringed City DLC (28 March), and at least one boss.
If you want even more specifics about each image, Namco Bandai put them up on imgur with little text snippets. The same bits of text that were in the Famitsu article, most likely. Except now in English.