I'm going to guess that it is a time zone thing then, and Nintendo's catering for people with normal sleeping habits. I mean people aren't usually up at 5:30 in the morning.It's been May 19 for five and a half hours in my timezone, and the promotions tab still just mentions the Munna event, as well.
And before anyone asks, despite it apparently not changing anything, I made sure to get an Eeveelution properly.
For what it's worth, I grabbed my Espeon at aroudn 4:30 PM my time.