Top Marks, I say!
I have the 4th edition (2008) and I welcome this new one with its foreword and additional content. On the basis that Ray Franz's work is unchanged we can read that and choose what other content to analyse too.
I never knew about Jon A. Mitchell - secretary to the GB in 1980/1981 - his knowledge of the "lock down" at Brooklyn after Ray Franz left sounds interesting.
Also Deborah Dykstra's association with the Ray and Cynthia and her account will be interesting too - they must have trusted her and it looks as if all has come through.
The foreword by David Henke may not interest me but it may well open this up to a wider audience.
The additions may well help this telling of events of nearly 40 years ago (and of course Ray discussed the "original" generation change in 1995 although he had passed away before being able to write about the "Overlapping" craziness) become more relevant.