The latest free Stay at Home, Play at Home Dungeons & Dragons download is available from Wizards of the Coast. In D&D Adventurers League: Eye of Xxiphu, the player characters continue to race a number of factions to obtain the titular artifact before it falls into the wrong hands. The adventure is for 17th-20th level characters and the 34 page PDF is absolutely free at Dungeon Masters Guild through June 18th.
From WotC:
Baron Rajiram’s forces have secured the Nelanther Isles and have scoured the Sword Coast for treasures.
Now they have begun to explore a mysterious island that recently just popped into existence nearby. SEER seems to believe that an aboleth artifact is their goal. It is up to the adventurers, in competition with the baron, as well as aboleths, the Kraken Society, and the mysterious caretaker of the island, to locate the Eye of Xxiphu and avert catastrophic disaster.
A Four-Hour Adventure for 17th-20th Level Characters