OK, just completed my first patch 4 Gith fight: yes. Harder than before. One of my team was downed (but saved) and we finished the fight with that char on 4 life and everyone else on about half. Used a lot of spell slots and superiority dice, but no potions or barrels. Die rolls were so-so. Only one shove succeeded. Party was lvl 4, halfling rogue (thief, dual-wielding magical short swords), Lae'zel (battle master with Sword of Tyr), Shadowheart with Tough feat and Gnoll flail, and Wyll with Moderately Armoured, plus his Imp.

You get some OK weapons (nothing better than I already had) but NO MORE SECOND GITHYANKI HALF-PLATE, WTH LARIAN