Russell Beattie has written up a test for the Android OS:

Simple test: Will you be able to take the Android OS as it exists on Monday and hack it so it runs on an existing device? Will there be hacked Windows CE devices, or even the odd phone running the OS that day or within the week? That’s the supposed differentiator between Google’s offering and established mobile operating systems out there: Windows Mobile, Symbian, Moto’s Linux variant, the iPhone OSX variant, etc. None of these guys will let any joe just take their code and install it on any device they want, right?

I can’t wait for the 12th to get everything out there. Some people called the initial post vapor, and it was painful to hear as we knew it wasn’t the case.

I hope that developers are excited about the platform and what it has to offer. A lot of great work has gone into the system, and I think that it offers great APIs and a solid developer experience. We had to prove that out internally by building applications on it ourselves, and although it is early days, we are happy.

Now it is at a point where the entire community can develop, I am sure it will get a whole lot better in short order!