I'm not sure. But what you could do is subscribe to this forum. They're bound to announce it here!
Go the top section of this subsection (here) and click forum tools > subscribe to this forum. Select 'daily updates by e-mail'. You might receive a few additional notifications before it's time, but better safe than sorry I guess?
But I'm sure the OLFSL crew will come up with something better.
I could add a "Please notify me about important OLFSL events" -checkbox into profile page, so everyone that wished to be notified could just tick that box