The entire July 15th premise is to maintain 1914 as a significant date
The great trib & Armageddon were already pushed out as future events decades ago, so why the change?
1914 was a hundred years ago...what the heck is Jesus waiting for?
well by splitting Matt 24:45 into two fulfillments they keep 1914 as significant but give purpose to the past 100 years.
Now Jesus is not "arrived" and just waiting around holding back the 4 winds, rather he is fulfilling the time period of Matt 25:45 before the "happy is that slave who's master arrives finding him doing so" part
really, NOTHING has changed. The WTS has just made the R&F feel better about a hundred years of nothing