I can't help but think that nothing much is happening on the eyepiece development front. Not much has really changed in about the last 4 years.
The last time anything really new & different hit the market, was back in 2015 with the ES 92 series. But despite its apparent success, there haven't been any new focal lengths.
The APM 30mm is close in sharpness to the 31T5 & ES 30, And I suppose if weight is an issue, then that could be considered a new development. But the difference in TFOV is noticeable. (I've tested all 3).
And the upcoming Apollo 11 seems awful close in specs to the Docter, and I've had mine since 2013.
Not that it matters much to me anyways, as I haven't missed a clear night in years. But it just feels like I could have stopped reading the eyepiece forum for the last 4 years, and nothing would have really changed. I don't find myself getting swept away by anything new, because there really isn't anything new. Maybe the eyepiece industry has reached its limit at being able to progress.