Windows 8 up and running

The installation is complete and I am now running Windows 8 on a Inspiron E1405 laptop.  The first thing you notice is the tiles that occupy the homescreen.  Instead of a desktop, you get a bunch of tiles, similar to icons on your homescreen on your smartphone.  If you click on "Desktop", you get a conventional desktop that is pretty much identical to the Windows 7 desktop.  It's like a marriage between your smartphone and computer.  It's hard to explain, but that is my initial gut reaction.  One confirmed detail that was announced is that Anti-Virus will be built into Windows 8.  No word on what it will be, although it would be a safe bet to assume some form of Microsoft's Security Essentials.  More details as I play around with it some more.