I translated the entry using Google translator (lol), and something tells me it won't be a wifi event:
-------------------------------------
Original English Entry:
Greetings. Happy new year!
We look forward to your support
and encouragement.
In 2008, we Game Freak will try for
various things as always!
And we will keep striving to create
new innovation beyond the imagination.
Well,
I'd like to ask a question to you.
Do you have an aspiration for this year?
I, Masuda's aspiration will be
'to gather up stuffs firmly'.
Last year was the year of 'Challenge'...
This year, I'd like to gather many things up firmly.
If you don't have any aspiration yet,
try to come up with one!
Oh, yes.
Here's a little surprise for you.
Please play Pokemon Diamond / Pearl on January 12th.
You'll find something different!!!!!
I hope this year, things go well for all of you.
See ya.
Google Translated Entry:
Ladies and gentlemen, it ??? Congratulations.
This year also greatly appreciated.
2008, and this year the game freak, and many fine!
And despite expectations of more than creative play and keep birth.
Now,
But suddenly, everyone!
I thought of this year's resolution?
This year's Masuda said, "put together firmly."
Last year was a year of challenge, and,
This year, the firm sat down with the many things that I want at once.
Still, do not think that people would love!
This year's resolution, please take a look!
Oh, yeah.
Play a New Year's gift.
January 12 Pearl diamond please try to play.
Be something different!!!!!
Relations this year for many years may also wish you happy.
Now.
----------------------------------
With no announcement from Pokemon.com (or anywhere else), a wifi event seems out of the question.