I am avery much alive, and up to my ears in the effort to publish four more Landmark Series volumes. Anticipated Publication dates are: 2017, Landmark edition of Julius Caesar, 2018, Landmark edition of Xenophon's Anabasis, 2019, a Landmark edition of the works of Polybius, and 2020, a Landmark edition of Ammianus Marcellins. These volumes require a lot of care and much time. I have no publication plans after that, thank you.
While the last comment saddens me, I'm excited to see what is planned in this superb series. I will pass on additional information as I find out more.