It's going to consist of 3 key parts:
Zuckerberg outlined three features that will define Facebook's new offering, which Zuckerberg called a "modern messaging product": Seamless messaging, conversation history, and a social inbox for "filtering exactly the messages you want to see."
It's going to tie together instant messaging, SMS messaging, email and chat.
And here's the part that has the most interest:
Facebook is going to filter by your friends.
So you know those IM gurus sending you tons of crap? Bye bye!
It's gonna be interesting.
Now if you have to log in to your Facebook account to get emails and you can combine SMS with Facebook, it's going to get interesting.
How are we going to monitize this folks?