There are plenty of whispers but Nikki's tweet is in no way suggesting something is in the immediate nor is the tweet a "huge" revelation.
That's exactly what it's doing. Assuming anytime before September counts as immediate.
It's suggesting an announcement prior to her previous expectation of September. It's putting forth that idea.
Though it's not disavowing the possibility of the September announcement either.
It's not asserting it will. It's not a statement of fact.
But it is suggesting it, as an outcome
And fwiw an assumption is a claim of confidence, just one without total proof. That said, that was about September, not sooner.
And it's probably a huge revelation for people who don't trust random images, value her opinion, and weren't expecting to hear anything until next year. Because even with an assumption of September or sooner - even just September - that's a lot closer than the early to mid 2024 some were expecting.
I know these are semantics. I'm not trying to hold her to some vow she didn't make. Nothing said was definitive.
But that tweet does suggest something (a few things, actually), it just doesn't posit any as fact.