Some solid unofficial Facebook apps have cropped up for Android lately, but it looks like they're going to be displaced by an official app as soon as this week. It's going to be different than the iPhone one.
It's going to be more limited, for one, according to TechCrunch's source. But it's apparently going to revolve more tightly around the stream and status updates, using Facebook's newest Stream API that shows how many new stream updates are waiting for you as they come in. Better Stream integration doesn't really make up for not having an inbox though, personally. And all the crazy stuff the next iPhone app will have makes it look even more sadly barebones. But hey, it's happening at least, right??