Ars Magica, currently on its 5th Edition, will be getting a 5th Edition Definitive edition this year. 5th Edition was released 20 years ago, and this new version will hit crowdfunding in fall 2024 as a full-colour hardcover book.
The original Ars Magica was released in 1987, and the game has been owned by Lion Rampant, White Wolf, Wizards of the Coast, and its current owner Atlas Games. Set in a mythical version of Europe, it centers around mages and features 'troupe' play where players have more than one character. It also boasts a 'verb-noun' magic system, enabling players to improvise spells on the go.
This edition has been in the works for a few years, revising and updating the text, and adding new material, new art, and new layout.
Additionally, the game will come with an open license; Atlas Games has not chosen which yet, but says it is leaning towards Creative Commons (CC BY-SA).