I highly recommend reading Mike Aubrey’s recent post on Dionysius Thrax over at ΕΝ ΕΦΕΣΩ.
He’s also posted his first installment of thoughts on the SBL panel discussion on Deponency. I was unable to attend this year, but am glad to hear that a consensus appears to be arising around the approach to Greek voice that I have tried to reflect in my lessons on the Aorist Middle and Passive (Lessons 19, 20, and 21).