I had been under the belief that 5th Edition Ars was the last edition, and that further development would go in other direction - like Ars and Gumshoe.
Then I read this at the bottom of page 1 of the below thread. Did everyone else know that they were looking at the possibility of a 6th edition, and I just missed the discussion?
"We are in the (slow, so slow) process of developing a version of GUMSHOE that blends the investigative mechanics of games like Night's Black Agents and Trail of Cthulhu with Ars Magica's magic system. This version of ArM, known in-house as Magic Shoe, has so far been a proof of concept exercise with an intent to eventually publish.
We're also (slowly, very slowly) figuring out what the new edition of Ars Magica will look like, how it will be different from the previous editions, and whether it will actually exist at all. I'd like to think it will. A sixth edition of one of the greatest magic-centric fantasy games of all time seems like a good idea."
RPG Director| Atlas Games