If you were hoping that the Magus Sisters being bosses meant that you would be free of fighting them as a trial, the latest update to the official site for Final Fantasy XIV: Endwalker will rid you of that particular concept. The site now lists both Anima and the Magus Sisters as the trials for the expansion, as well as giving a brief preview of the upcoming alliance raid series (Myths of the Realm) and the normal raid series (Pandæmonium, and that’s not going to get annoying to type out really fast).
For those of you who prefer something a little more visual for your experience, the site has also been updated with new artwork of the various jobs in their level 90 artifact gear and the Magus Sisters posing dramatically. There’s less than a month remaining until early access for the expansion begins, but if you need a little more hype to sustain you at the moment, check out the latest updates.Source: Official Site