While you’re right in most aspects, I don’t think Universal will wait to announce the new park after SWGE. They have to start construction next year, and with that comes a groundbreaking ceremony. They’ve also alluded to the new park multiple times now, so they’re being completely open about it.
If I had to take a guess...
- Permits leak later this year.
- Universal purposely leaks concept art early next year, to see the reception.
- Groundbreaking in September, along with a short concept video and art.