I just checked the Ars Magica site for the first time in a while and I found this page on an upcoming Transylvanian Tribunal book: atlas-games.com/product_tables/AG0302.php
I looked through the first few pages of this forum and did a search on it, and I couldn't find a thread on it. That surprised me, so if I missed it, feel free to link me to the thread.
With that out of the way, I'm pretty excited about this book as fills in an area that's interesting to me. Do we know anything else about its contents yet?