One D&D
One D&D is the latest attempt by Wizards of the Coast to revamp their 10-year-old 5th Edition and change some rules. The full release will launch in 2024, commemorating the 50th anniversary of this long-running franchising. Playtesting for it began in in August 2022.
The main premise for this edition (and the reason why it's using One as a title) is that WOTC plans on not only releasing books but also an online database that will always be updating so they don't have to suffer having to wait for years for errata and avoiding some of the pain of having to buy both a book and digital rules.