Comrades update is underwhelming but what did I expect lol
Each new boss has two versions, one around level 45-50 and a second that unlocks after beating the first one that's closer to level 70-99. There's an Ardyn+Ravus boss that feels impossible, the rest are fun and their higher level forms are challenging. Deathclaw looks cool but isn't all that fun to fight given that your only options for 90% of the fight are aerial or ranged, ruling out katanas and maces. His remixed theme is a bop though.
The new gear is neat, you can get all of the new stuff as rare drops from the different bosses or save up currency that you get from the bosses to trade in for them. Good luck with that though, Glauca's armor takes like 90. At the very least if you want Biggs and Wedge's gear it'll take you 30 fights each.
EDIT: Also I read on the subreddit that Matsuda is in the update but I have yet to find him, he's not on the new menu with the other new bosses. Not right off the bat, at least.