Carl Conrad has published a new, very brief account of the view of Greek voice that he has been proposing for several years now. You can get a copy of the AGNT Newsletter in which it appears at the link below. The title of the article is “Ancient Greek Voice Forms: Categorizing and Making Sense of Them.”
If you have not yet read Dr. Conrad’s approach to voice, take this opportunity to do so. The new article is short and presents a helpful overview of his perspective—a perspective I believe should become the dominant one with time.
The link below will take you to a page that has not only the new article, but his older, more extensive comments on the topic as well.