From the rumor, the description of the dock in trackpad doesn't sound practical (to me, anyway)... I mean, what benefit would it
actually bring?
For example, I use my dock
only to manage currently running apps, and I open almost all of my apps with Aliases and Quicksilver.
More keyboard shortcuts - Mouse = Faster working
Dock on trackpad isn't realistic- the trackpad won't expand as you add more stuff....so I'm guessing icons will get smaller, making it harder to use.
In short, I doubt a pro user would use this trackpad dock stuff, unless he wanted to
flam (Trinidadian talk for "show off foolishly"). I doubt this rumor will come to fruition.
What I can see though is a small,
editable touchscreen on the side with a selection of shortcuts to your most frequently used apps- sorta like the left hand side of the
Optimus Maximus Keyboard