I think that for Atlas to open up Ars Magica, specially in this movement we are having now, would be very beneficial. I would be interested to see how they separate Mythic Europe (the "lore") from the mechanics as the two are very interconnected. But outside of that, I think it would really help people take the "lore" and propel it into the modern/Renaissance/alternative era.
I think that this is a great time for them to release the book with updated language. I know many people who are interested in it, but the book is written less ideally. I think there is a opportunity here for them.