The WTBS is and will always continue to cleverly, secretly and cautiously refrain from emphasizing certain doctrines that have become controversial and difficult to maintain, such as 1914.
Historically, the WTBS will cease to devote publicized printed material to a doctrine that is generating uncontrollable controversy and causing decreases in membership and recruitment. The typical approach (check older threads from AlanF.) has been to quietly scale back the public teaching and printing of a certain doctrine.
After a period where in which the WTBS leadership works behind the scenes to either re-invent, re-write, or modify the doctrine and include inventive and creative biblical and divine justification for the change, then the doctrine is allowed to gradually re-surface in it's "new and improved" state and the rolls are asked to make adjustments.
If it cannot be re-invented, then it quietly disappears from the publications, then from the platform and then from the shelves, until it has disappeared from the JW vernacular. Older JW's who take longer to adjust are viewed as "stale and not keeping up with the truth and light" and are encouraged by youngers ones to keep pace with God's organization.
You have all seen and experienced this in the past with 1975, the Generation teachings, how to treat disfellowshipped/disassociated ones, etc, etc, etc.
The WTBS has so far cautiously avoided making a broad and recognizable acknowledgment of public error and public retractions of doctrinal controversies in recent times and will probably continue that unwritten policy and method of casually, subliminally and gradually removing certain issues from the JW feeding table.