If its the temp stadium then they should just say its the temp stadium. The Orlando and Atlanta announcements everybody knew what they were going to be beforehand. Hopefully its something different and the club will shock us all. Certainly I agree with the use of Yankee Stadium so that's no concern. There's just this odd habit in MLS of making announcements when everybody knows what its probably going to be. If the club had already officially announced the temporary stadium then this would be far more intriguing. Guess its for media reasons and there's sense promoting it beforehand but still...
Oh it's definitely the Yankee Stadium thing, and there's definitely no other info to announce, although I guess they might provide details of how the stadium will work out which weren't known before but that'll be the sum of this announcement. Naturally, though, the club won't reveal this because they want as many people watching as possible. They'd probably lose at least half of their viewers if they let it slip. In fact, you could ask what the point of an official announcement is if they've already announced what the announcement is about.
It would appear it is nothing but announcing what everyone already knows - the club will play at Yankee Stadium. This is very MCFC-esque; their "major announcements" tend to get people all worked up only for it to be something about a new sort of pie being sold on matchdays.
I know announcing what most, if not all of us, already know is not exciting. But it also serves a greater purpose to inform and pique interest in the casual sports fan. It is an opportunity for the local/national media to pick up the story and let everyone know that the NYCFC flag has been planted!
I say the more press conferences/announcements the better.