I wouldn't get too excited.

If the theme isn't developed in-house (like P2 and Monotone), then it will probably be farmed out to a relatively unknown person. A possible exception to this might be them taking something like Sandbox and bringing it into 2010. I doubt very seriously anyone who charges money for themes will be considered for the role.

I also highly doubt that the theme will be loaded up with hooks or filters or any other framework-esque features. The default theme has always served as a sample theme. I wouldn't expect to see that change.

More than likely, it'll be a bare-bones theme with excellent, minimal markup structure, well commented PHP and CSS, and liberal use of dynamic classes to accomplish the design. Kubrick's major flaw has always been it's outdated code.

I'd also expect to see some CSS3 and maybe even HTML5. After all, the theme IS called 2010.