They will NEVER let 1914 go entirely, just as the 7DA's have never entirely let go of 1843. But what will happen at some point in the future is is they will make Christ's 'presence' commensurate with the great tribulation and the one-thousand year reign but no sooner. They will admit that Jesus was never 'enthroned' as king in 1914 and will move anything to do with Jesus reign and kingship to the future, as they damn well should have done a long time ago.
BUT they will stick with the teaching that the 'last days' and the 'composite sign' began in 1914 because of the WW1 factor. They will never dump 1914 entirely because of WW1 starting then.
If they fiddle with that then they will also have to admit that there was no "arriving" in 1914 or 1919 by the master per Matt 24: 46. This is a glaring and outrageous contradiction with their own "new light" on Matt 25: 31, where they have taught (correctly) since 1995 that Jesus "arrives" in THE FUTURE to sit down on his glorious throne (something all other Christians have had right all along). So they will be forced to eventually go more mainstream by correcting this and moving Matt 24: 46 & 47 to the future, making them admit that the master has not yet appointed anyone "over all his belongings".
So, in effect, they will separate the "appointment" in Matt 24: 45 to be from Pentecost 33CE onward to apply to JW's only, and they will move the "arriving" in v.46 to the future. Nevertheless....
....despite all that, they will continue to insist that only those Christians associated with the Watchtower Bible & Tract Society in 1919 have been uniquely feeding the domestics their "food at the proper time" per Matt 24:45 under Jesus' direction. They will restate that around 1919 a clearly identifiable "faithful and discreet slave" class was released from Babylonish spiritual captivity and has preached primitive Christian truth free from false Babylonish dogma. JW's will buy that and that way the Watchtower Society gets to retain it's power and unquestioning authority over the majority of the rank and file, even though a fair number will probably stumble.
You heard it from me first.