It’s here but you’ll need a Google account, which you can easily create, or, if you have a GMail account, you can use that. Matter of fact, you can use any of the accounts that you have already created with Google.
My early opinion? It’s not a Bloglines but it’s an OK start.
Update, October 21: Well, I’ve played with it a bit and I’ll take function over form anyday. Yeah, it’s cute and the way it interacts with the user is neat-o keen but if you’ve got an active site you’re tracking via RSS or more than a couple of subscriptions, I find it too unwieldy. Maybe it’s just me … I haven’t given up yet and will continue to work with it but, for now, Bloglines is still my number one app.