Let the speculation begin.
If you go to hillaryclintonoffice.com, here's what you see:
If you click on "Contact" you get this:
It looks like she'll be doing some public speaking, appearances, and Q and A... and who knows what else.
But please don't start with the "Hillary 2016" talk, at least until Hillary herself does. It really is getting a little silly already, and it's only February 2013.
Oh what the hell. Go ahead. Speculate.
UPDATE: A friend advises me that this is not an official Hillary site. Here's where she sent me. She went on to say that hillaryclinton dot com links to that, and it is paid for by "friends of Hillary."