The best conjecture seems to be that the GB are going to drop the literal 144,000 teaching, especially in view of the December Watchtower that pointedly does not mention the 144,000 number.
If they are dropping the literal 144,000 number, but still claim that only a small number are anointed, and can partake, and that only a few are left on earth, then it is fair to ask what has really changed? Nothing! They are simply clearing up the embarrassing situation that there were obviously more than 144,000 "anointed" believers from 36 AD until now, and that the number of partakers has been increasing in recent years.
We should be clear what they are not doing in that case.
They are not abolishing the two tier believer system.
They are not saying everyone can partake at the memorial.
They are not dropping their embarrassingly inept exegesis of the "other sheep" scripture as referring to second class believers rather than gentile believers (as almost every Bible scholar would interpret the verse).
They are not dropping their use of the "little flock" scripture out of context.
They are presumably not apologising for insisting for decades that all other Christian believers were wrong to view the 144,000 as a figurative number.
They are not diminishing the authority of the Governing Body over the rank and file, which has already been disentangled from the teaching on the anointed by making the "faithful and discreet slave" refer solely to the GB rather than anointed Christians generally.
In other words nothing significant has actually changed. Abolishing the literal 144,000 teaching could have been taken as an opportunity for the Watchtower to abandon their two tier scheme of salvation and their draconian authority structure. Instead they have, in line with practice over the past couple of decades, only changed doctrine in reaction to events (in this case increasing numbers of partakers), and only to the least degree possible while maintaining their overall dogma.
In short it is a small scale adjustment in reaction to events on the part of small minded reactionaries who lack imagination to see the bigger picture.
But it will no doubt be presented as wonderfull "flash of light" and the faithful JWs will on the whole lap it up.