As is often the case, the change announced at the annual meeting is being made to be a bigger deal than it actually is.
The change introduced at the annual meeting was that the 'one thought' (Revelation 17:13) is now considered to refer to the 'nations' giving their authority to the UN rather than to destroy 'false religion'.
But the JW position that the UN, once it has been given authority in the imaginary scenario, will then 'turn against false religion' has not actually changed.