The Proclaimers book is not so current anymore, since the introduction of the new DVD.
When the DVD was presented at the convention last summer, the Bethel speaker told the audience "The need for this DVD was great, because Jehovah's Witnesses are not readers of thick (big volume) books."
With these remarkable words he put the Proclaimers book to the sidelines of JW-history.
I heard it with my own ears at the Utrecht convention in The Netherlands.