Well, it looks like Microsoft Office 2013 has been released to manufacture ( see http://blogs.office.com/b/office-news/archive/2012/10/11/office-reaches-rtm.aspx ). I think that includes Visio 2013 too, even though Visio dropped the Office prefix for the Visio 2010 release.
All I need now is a Surface so that I can draw with my fingers! I must admit that I used to use a Pen and Tablet when I was a CAD user many years ago, but have stuck with a mouse for quite a while now, although I hate drawing or writing freehand with it.
I am pretty sure that my handwriting has got a lot worse because I use a keyboard so much (and probably my spelling too). I used to sketch with chalk or a pencil, but years of pushing a plastic rodent, and clicking its ears have probably reduced my dexterity.
So, I am really looking forward to Visio 2013 on a Windows 8 Surface …
Remember, the current first version of the Surface is running Windows 8 RT. As such, I think it won’t run Visio 2013, unless you’re using Visio from Office 365 on the Cloud. Also, RT won’t allow connections to a Windows Network Domain, so you’re not going to use the Surface RT to get to your project files on the network. But, there is supposedly a Surface tablet planned with Windows 8 Pro. That one can join networks and Visio 2013, Project, etc.