No, it should be "another unannounced title", that's what it says in this post.The other game was Planet Zoo on console.
The fact that PZ will have a console version was revealed before the broadcast and a trailer was shown.
Also in the title of the stream "TWO big game announcements" , the announcement trailer for the PZ was a day earlier.
And how can the console version sound like a "BIG game announcement" if it's just a copy of the game for another platform?
On the stream they definitely talked for a minute about a new game that will be released in 2024, instead of 2025, and everyone will really like it, but that’s all that was said.