SoggyShorts
Mathematician par Excellence
The developers seem to have decided long ago that it is better to annoy players 100 times by not releasing any dates for anything rather than to change a date later and face the backlash.The other issue, though, is releasing the dates. If these things have a timeline to release on a date, why wait until within a couple of days to tell when it will be? They've been advertising for the event heavily (on Facebook, at least) but silent on when it would take place.
Personally, I'd much rather that they give us dates with the standard disclaimer that they are subject to change without notice.